I'm not ashamed to say that I think Super Mario Bros. 3 is one of the best games of all time — but which game is your favorite? — so when I saw this SMB 3 External Hard Drive on Etsy, I couldn't contain my excitement. In an excellent example of recycling old games, this crafty DIY'er installed a 160GB HDD Seagate SATA II hard drive inside the gaming cartridge, which is totally USB powered so you don't have to plug in.
Even better? It comes with the original black protective encasing. . . amazing! If you have some game cartridges lying around at home from days gone by, you could probably DIY this yourself on the cheap, but if you want the novelty of having your own SMB 3 cartridge to hold all of your important data, this great external drive will set you back $120.