I have a double cassette player in my bedroom and turn it one in the morning while showering, etc. With about 8 briefcases of tapes to rotate through - all classic rock of course - it never gets boring.
You can find these on eBay....here's just one:
New Supersonic Stereo Boombox MP3 CD Player Am FM Radio with Dual Cassette Deck | eBay
Or in pawn shops.
The ultimate is to make compilation tapes. I have a ton of these I made back in the 90's...the last era for decent rock.