I don't really know if this is stranger than cubing, but I fix (~5-13 year old) computers as a hobby.
Since the age of 6 or 7 I liked taking apart electronics (I took apart at least 5 or 6 borken VCRs). Now I have 4 working computers (one not too bad even for today's standards, 2GB RAM and 1.8GHz processor). The funniest part is that these 4 computers haven't cost me anything yet. I got one from school for free (it had been approved for electronic recycling and my teacher noticed I was interested, and gave it to me. I was probably an odd sight, walking back to my locker with a computer under my arm.). I got another one (really a 3/4 computer when I got it) from a friend of the family and fixed it up with parts from a computer that broke (motherboard problem). The other 2 came from a friend who's parents wanted to get rid of the computers that had been taking up space in their basement.
I now have the computers in a corner of the "computer room" (there are 2 other shared systems here) and I should really sort out the mess of computer parts and static bags eventually.
Wow, looking back at what I wrote, I hope this isn't too much information. I could seriously go on all day like this, detailing how I fixed each of the computers and what I plan to do with them. I better stop here, or this might get way too long.
(here)