From a human skull to owl vomit, you wouldn't believe the things you can buy online. We round up some of the most incredible purchases that are right at your fingertips.

According to a study by the National Geographic back in 2012, 33% of Americans said they believe in UFOs and one in 10 Americans believe they have seen a UFO. So, based on these stats, who wouldn't want this UFO detector to keep an eye out for any unwanted disturbances? You can pick one of these up on Amazon for around $90 (£68) and apparently it will keep an eye out for any signs of UFOs on a 24/7 basis.

“When anything is possible, preparation is peace of mind” is the motto of survival.com, a website that will allow you to purchase your own survival condo. Such preparation comes at a cost of over $3 million (£2 million), but will give you your very own condo built into an old US missile silo.

Just what you've been waiting for – a box of owl vomit. But it's not just a box of animal sick, unreal upchuck also claims to combine the thrill of "dissecting owl puke and rebuilding skeletons". The kit comes with two kinds of pellets, a bone sorting chart, dissection tray, and magnifier. And it's only $14.99 (£11.32).

If you’ve always wanted to sleep a bit closer to the ceiling, then you have the option of purchasing a magnetic levitating bed that floats up to five feet off the ground (as you can tell it's not pictured here). While in the air, the bed can support up to 900kg and is held up by four thin wires. It is likely to cost you around $1,200,000 (£816,000), but Kim Kardashian and Kanye West reportedly bought one for around $722.000 (£491,000).

Most people want to get rid of as much human body fat as possible, but for those who want to hang onto some for a bit longer, you can get hold of this fatty tissue replica on Amazon. It's actually designed to provide students and patients with a physical and visual representation of excess body fat, but you could just pop it on a shelf if you wanted to.

If you’re a thrill seeker with a death wish, you can actually pay money to fly. And not the jumping off a cliff kind of flying, but the flying that involves strapping a jetpack to your back and launching into the air at 46mph. You can buy one of these James Bond-style gadgets from martinjetpack.com and it is likely to cost you around $150,000 (£102,000).

Yes, that’s right, if you really love your pet – and we don’t doubt that you do – you can pay to have another one that is exactly the same. The first pet cloning lab has been set up in South Korea, which has seen customers across the world paying as much as $100,000 (£68,000) for duplicate dogs and cats. You can have a browse through the likes of myfriendagain.com, which is a dog cloning company aimed at reuniting you with your little furry friends.

If you’re looking to buy something a little more private than a whole town, but equally as extravagant, you could purchase your own island instead. Some of the best private islands in the world are up for sale for anywhere from £400,000 (£272,000) to over £64 million (£43.50 million). Put it this way, you can buy an island for the price of a two-bed apartment in London or NYC.

You’re going to need a lot of money for this one, but it is entirely possible to buy a town if you so wish. In 2002, the town of Bridgeville in California was sold for $1.77m (£1.2 million) in an eBay auction. And in 1989, actress Kim Basinger bought the majority of Braselton, a 500-person town, for $20 million (£14 million). If you're not that flush, villages are much more affordable.

If you’ve got some spare cash lying around, you can rent celebrities for private events from around $35,000 (£23,800). The website Millionaire’s Concierge will let you invite the likes of Leonardo DiCaprio or Paris Hilton for a party, or simply just to hang out with you for a while. If you love your politicians enough, you could even rent Donald Trump for $300,000 (£204,000)… an hour.

If you’ve always dreamed of a car that can fly as well as drive, you can now own your own flying car for a mere $350,000 (£238,000). The Jetsons made us believe it would be introduced by 2000, which sadly didn’t happen, but years later and it’s finally here – you just need a pilot’s license to fly one.

Yes, it is entirely possible to buy yourself your very own battle tank via a website called Mortal Investments – but only if you’re willing to shell out $60,000 (£40,800). When the army needs to get rid of old fighting vehicles, the extras are gathered, weapons are removed and they are sold to the general public. But sadly most tanks aren’t legal on the streets, so you’d need some seriously good storage to avoid getting into trouble.

For $44,000 (£30,000), you can have a life-size sculpture of your baby bump (or somebody else’s) available in glass or bronze. The craze for baby casting has certainly taken off – casts of baby feet are even available on a necklace if you wanted a smaller version – but London-based Wrightson & Platt produce these human-size stomach replicas through 3D photography to avoid a “messy plaster cast”.

If you’re not getting a good night's sleep and need something to spend a lot of money on, you can purchase a relaxation capsule for $40,000 (£27,200). Despite looking like a spaceship, the ‘Relaxman’ is said to transport you to a totally relaxed state. The Swiss design has no heat, sound or light, meaning you are technically in the ideal environment for napping (once you’ve recovered from the extortionate shipping fee for its delivery).

Most people could build their own treehouse if they really wanted to, but having somebody else build your own, custom-made storybook treehouse or Victorian house is an entirely different matter. Luxury Treehouses will help to design the little house of your dreams, but it will set you back around $40,000 (£27,200) at a minimum..

Adventure seekers, behold, you could spend $18,000 (£12,200) on a wedding that will allow you to say ‘I do’ at 34,000 feet, while floating around in a plane, all through your helpful friend gozerog.com. There’s only one catch: as the plane falls at an angle, you’re likely to experience vomiting from the weightlessness. So it’s probably best to steer clear of a white dress.

Back to the Future conned us into believing we’d all be riding around on hoverboards by 2015, which, much like flying cars, didn’t amount to much. But you can now pick up a nifty little levitating hover scooter that runs on the same principle at thisiswhyimbroke.com. The scooter rides around on a cushion of air at around 15mph and will set you back around $13,000 (£9,814).

In case you were wondering whether there really was such a thing as the ‘mile high club’, then rest assured there is. You can have an official membership for the club, which is usually advertised under ‘romantic sightseeing flights’, for anywhere from $800 (£540). This price will get you your own private ‘mile high’ room on a flight for an hour, so expect to pay more if you want it for longer.

For anywhere between $400 (£272) and $2,000 (£1,400) on powerskip.de, you can purchase your own set of powerskips – titanium leg attachments that use gas cylinders to make you run at incredible speeds and jump at heights that could see you skipping over cars and dodging traffic.

We don’t have the ability to jump on a quick flight up to the moon just yet, but you do have the option to purchase a plot of land up there in preparation for when we do. It’ll cost you anywhere from around $50 (£34) for an acre and the price will increase according to the size of land you wish to buy.

You've probably all been dying to have a human skull sat on your coffee table, and it is entirely possible too (without killing anybody). At Skullsunlimited.com you can pick up animal bones, human bones, whatever you like. The prices vary quite a lot, but expect to pay a few thousand dollars at least.

Surprisingly, pretty much anyone can go online and buy uranium ore from science supply websites. You can even buy a tub on Amazon for around $40 (£27). Apparently its radioactive ores are meant for scientific research and ‘professional collectors’.

Standing in line is obviously pretty dull, so why not just pay somebody else to do it for you? There are full-time ‘standers’, who just love standing in lines so much that they will accept $36 (£24.50) an hour to do the task for you.

We’ve all been tempted by ticking the ‘Lady’ or ‘Lord’ box when filling in forms, but it is entirely possible to pay for the privilege to do so, no matter what your status may be. Websites such as lordship-titles.com and elitetitles.com will allow you to buy a new title anywhere from around $29 ($20).

For around $15 ($10) at various star registry websites, you can name a star anything you like. Naming a star is a popular gift and usually comes with a pack detailing how and where you can find the star. You’ll might just want to purchase a telescope to go with it…

The price of renting a friend starts at around $10 (£6.80) an hour on rentafriend.com, but you might find many are happy to alter their fee depending on the activity you’d like some company for. So if tickets to a sporting event or concert are included, for example, it’s a pretty good deal to begin with.

For $18 (£14) on Amazon, you can purchase yourself a little can of 'unicorn meat' for all of those times when you're in need of adding a little sparkle into your day. It's quite a bargain really. Don't expect anything too meaty though, inside you'll just be greeted with a dismembered stuffed unicorn toy and we certainly wouldn't recommend eating that.