Raspberry Pi Zero loaded with RetroPie. Has 3 USB ports, 32gb micro SD card, HDMI output and 2.5amp power supply. Will play Nes, SNES, SMS, Genesis, Neo Geo Roms and many other retro consoles. Just finished building it this morning.
$76 shipped
http://i92.photobucket.com/albums/l7/butteroj/67666603-94E3-4508-B81B-F7C39DD03F45_zpsljz1v4ej.jpg
http://i92.photobucket.com/albums/l7/butteroj/0712EE98-DB65-4E80-8079-3971575C6D45_zpse3x1pbps.jpg