You think assembling IKEA furniture is challenging? Try the Tetra Shed on for size, then. The modular, multi-use cabin comes flat packed and can be assembled in a number of different configurations, depending on your needs. You’ll get a whopping 28 sq. ft. of storage, where we hope you’ll park something just as luxurious and valuable than this shed. Considering you’ll have to spend $25,000 to get your own, there’s a chance all the stuff you own is also worth a pretty penny.