I’ll start: printers.
I bought an HP in March 2020 when my job went remote and HP bricked it remotely after only 100 pages because I wouldn’t sign up for their subscription program. Ended up trashing a perfectly good printer.
Luckily my library’s close by and I can print there remotely.


Good news, there’s an open source vacuum project called Oomwoo, which allows you to build one yourself with off the shelf parts and a 3D printer
https://makerspet.com/blog/building-an-open-source-robot-vacuum-meet-oomwoo/
Have you seen any mowers that do that? Our back yard is mostly dead, but having it go out once a week would be so cool. I’m a little intimidated by the thought of putting this together, but also want to do it.
Edit: Looks like the vacuum is sold out.
A quick search for open source robot mowers pointed me to this: https://openmower.de/
As for Oomwoo, they’re still working on assembly instructions, so I wouldn’t immediately jump in unless you’re fine with a lot of tinkering. Also, it looks like right now they’re only considering parts kits, not fully assembled bots, and that seems to be a future add.
I personally still think it’s cool and will be keeping an eye on it