My favourite I don't have any more was an old Squier Silver Series Jazz Bass that had been badly abused, and one of my friends asked if he could rebuild it for a bit of coursework he was doing; so the layers of car paint were taken off down to the wood and it was given a tung oil finish, had a set of Seymour Duncans put in with a blend pot, volume and tone control, a heavy mass bridge, a full on rebuild with basically only the neck, body and control plate being original. Some so-and-so lifted it after a gig ignoring the MIM Precision and the Stingray next to it.
As for something I've wanted to play, not worked that one out fully yet!