Yes. You can get dirt cheap mini-pcs / NUC like devices on ebay for next to nothing and they aren't too crazy on the power front.
The biggest problem for the Raspberry PI platform if you are using it as a home server or like a lite desktop is the lack of proper storage.
However I do like the pi for things where you set them up and forget about it. I run a pi-hole on an old Pi 2. However that could be run as a docker container on a small home server / NAS.
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