Used (erased drive) 500GB external hard drive. These are still available new at $100-120, selling on Ebay for about $80... I'm only asking $50! Does include the original power cord and USB cord (to connect to your computer). If I can find the original box, there is also a little plastic stand so that it can sit upright on the desk instead of flat.

I used this drive to save personal/business information and stored it in case a fire/flood destroyed paper copies, didn't come anywhere near using all 500GB. No complaints, just received a newer version as a gift and have transferred my files over.