A lil bit.
I build all my own computers for largely the same reasons - it's cheaper and I get to put in exactly what I want.
I also like cooking which is somewhat similar. I've toyed with the idea of building my own airplane (there is a large hobby around building planes either from kits or plans from scratch), but haven't actually tackled that (my garage is too small at the moment).
That would be about it though. Most of my hobbies tend to fall somewhere in the spectrum of guns/shooting, computers/video games, and/or aviation.