I use APC Smart UPS 1500 for my PC and a ~25 year old APC Smart UPS 1000 for my TOYO heater. Both have been fine with battery replacement every few years.
I once attended a teaching class that required my developing a training session a-z. My choice was a hands on class consisting of turning old pc hardware into wall clocks. The hands on aspect earned me kudos.
I used my old PC Power & Cooling full tower from the mid ninties until 2018. Loved that case and only passed it on when the threadripper with cooler was too tall to fit. Fortunately a good home was found and it continues to be used. Darn I miss it.