1980's Casio EG-5 Cassette Player/Recorder Guitar w/Speaker (Made in Japan)
You can't make this stuff up.
The Casio EG-5 features a sturdy plastic body with a maple neck and hardtail bridge. The main feature here is the onboard speaker, amplifier and cassette player to fulfil all your 1980's desires! This allows you to play along to your favourite old cassettes and pretend you're an actual musician (because you know you aren't), plus you're able to record yourself to listen back later. Runs on 9v DC (either from batteries or a Boss style adaptor, neither included)
Honestly, this thing is great. The onboard amplifier and speaker are surprisingly useful and the contour of the body is comfortable to play. Great overall condition, tested and working as expected.