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.
Later model cars with internet connections or telematics antennas are likely sending info about whatever they can, whenever they can, but such things can be disabled easily enough.
Which manufacturers offer free Internet connections in their cars?