Most valuable toy: Sega Genesis ($350)
Original price: $200-$400
Selling for now: $50-$350

While your video games likely haven't shot up in value, a mint condition, boxed console can fetch you a nice return on investment. Here's a quick breakdown of what '90s systems are going for on eBay right now.

Sega Genesis: $350
Sega Dreamcast: $350
Sony Playstation: $300
Sega Saturn: $250
Super Nintendo: $250
Nintendo 64: $250 (more for special editions)

Of course, odds are that your console saw some wear and tear over years of guiding Sonic or Mario to the promised land, in which case your system might be good for $10 at a yard sale if you throw in a vintage T-shirt.