VCRs, TVs that were as deep as they were wide.
As Strav said a few things are obsolete in the sense that very few people use them but are still out there, even if considered "retro". I had a Sony Walkman that played cassettes, then later on had another Sony that played digitised music from a Sony-branded memory stick (it played its own proprietary format, but was a kinda sorta precusor to MP3 players). Now it's all about music on phones.
Camera film is all but obsolete, outside the realms of a few purists. Ditto music on vinyl.
Curiously wood fires seem to be gaining popularity as a way of heating homes, even when natural gas appears more convenient in just about every way. Unless you're going to go out to the woods and harvest the wood yourself it doesn't seem like it's a whole lot cheaper.
I have vague memories of old fashioned washing machines where you had to do some of the agitation yourself, and then you'd put the clothes through something that I think was called a mangle, that was basically two rollers that squeezed water out of them. Then you'd hang them out on the line to dry in the sun. I haven't seen anything like that in decades.
Oil lamps seem like neat things but outside of older people and communities like the Amish you don't see them very often. I've got a few lamps in my house that were once oil lamps that have been converted to electricity. I sometimes consider turning them back into oil lamps, just because. We don't have a lot of power failures in this area but it often seems like it would be useful to be able to keep the lights on when the power goes off.
One thing I don't miss is dial-up modems. They were fun in the day though, when it was the best we had and seemed very futuristic.