Considering second home business

I was talking to my brother-in-law last night as we were driving into town. I want to start up a second business, but I am not 100% sure just what I should start up. I am leaning either toward OOAK Artist Dolls or Handbound Books. I need to look into both ideas, as well as maybe a few other ideas, and see what makes the most sense for me. Right now I have a lot of other work I need to do, writing and getting a fireplace installed, so the research on job stuff will have to wait for a little while.