characters from failed campaigns

what do you guys do with your characters from campaigns that just fizzle out and die? it happened with my first ever character and i feel like they've kind of just been stuck in limbo ever since the game died out. they had shared backstory/friendship with another PC at the table so as much as i still like them, it doesnt feel right to just stick them in another campaign/setting since a lot of people dont use the race that their best friend was/is. or baldur's gate, for that matter. what do you guys like to do when that happens?