You can’t use the NES console and game cartridge to enjoy those retro video games, but these can be used as USB hub and flash drive to store your digital content.
Fungus amungus, a content manager at instructables, used a retro NES game console and a NES cartridge to make this set of storage system including a huge 1-port USB hub and also big USB flash drive. And the game cartridge comes with 8GB storage capacity, apparently, it’s enough to hold your tons of important data. Fortunately, the maker also published the whole making processes, so if you still keep your old NES console and several game cartridges, jump to instructables for the detailed descriptions. By the way, don’t miss the following demo video.