The Cheat's Record Player
From Homestar Runner Wiki
The Cheat's Record Player first appeared in rampage. The Cheat used it to play background music for Strong Bad and Coach Z when they were going on a lyrical rampage. It later appeared in Limozeen vs. Sloshy.
According to the commentary for rampage, this is based on the Fisher-Price Phonograph that Matt had when he was a kid, and tried to bring to college. The real record player could play 33 to 45 RPM records and, according to Matt, could only play "slow stuff or jazz" or else "it just couldn't handle it."