I have a chipped PS1 in the loft and dozens of Russian pirate games.
Palm Pilot in a drawer somewhere, useless piece of junk.
Mini disc player that I never used, knocking around somewhere.
I still have a Psion 3a, great piece of kit, which I used a lot back in the day.
We got given those Hpaq things at work. Useless. The GPS chip was so slow it flattened the battery before it could get a fix from cold.
In 1995 I remember being very close to buying a 3DO console in HMV, then I actually played the very pretty looking Star Wars game that had interested me. It was crap! Luckily for me I walked away.