So I found an olderish HP full-sized tower with a burned out motherboard in my basement. Thinking of turning it into a NAS or other low powered server for the house (we could totally use yet another one for something, I'm sure). As I already have a selection of drives, RAM, power supplies and cables hanging about that'll work in just about anything 2008 and up, I was wondering what motherboards others have purchased recently in the low powered x86 arena (running total of under 30 watts should be more than enough for anything I might do)? Any must haves, don't touches or "shoulda worked" horror stories when penny pinching something about twice as powerful as a Pi?