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.
The most viable option is to manage your own firewall and block the outbound traffic. Only suggesting as a work around for those that want a robot vacuum.