From the annals of more funky/awesome portable electronics: the Sharp MR-90 boombox

includes mini keyboard/sequencer so you can play along :D

http://www.ohgizmo.com/2008/09/09/sharp-mr-990-melody-searcher-boombox-with-mini-organ-now-on-ebay/

https://octodon.social/media/Qa4hRs0tFakd9JILjZI