I stick all my games on a 128GB (Micro Center brand) USB3 Flash Drive. It's large enough to for a 20GB Mint install, 32GB Xbox 360 usb storage, GameCube games, and My Wii Games.
for "backups", I keep them on a 2.5 250GB IDE HDD with a USB to 2.5/3.5/SATA adapter.
..and the drive was only 79.99$![tongue :P :P](data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7)
for "backups", I keep them on a 2.5 250GB IDE HDD with a USB to 2.5/3.5/SATA adapter.
..and the drive was only 79.99$