This is Easy: NES Cartridge External Hard Drive

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NES cartridges are pretty useless nowadays. Yeah, yeah — they still play games, but who cares? You can always re-buy your old classics on the Virtual Console. And once you do that, you’ve successfully wasted money and are left with a big hunk of worthless plastic. Now what are you going to do?

Easy! Transform those classic shells into something totally practical, like an external hard drive using Instructables user cry0bot’s handy guide [via Retroist]:

See? Problem solved. Now you can hide all your DSi porn with style, hornballs!

Continue after the break to see what it looks like once you stuff a hard drive inside that cartridge.