Lp's and Vinyl Records
I have a modest Yamaha turntable with a $400 Clearaudio cartridge. I clean the LP's nicely with a cheap Discwasher wipe and fluid. Man, you'd be surprised how nice a lot of those LP's sound. Back in the day, I think we played those LP's with the crappy entry level cartridge that came with the turntables, not knowing what good sound could be extracted from those LPs.
I break them out at parties sometimes. It's fun when people say "I remember that song!" It's fun to hit the Goodwill stores and you can pick up some nice vinyl for just a buck each.