Thanks Diane and Lique for your added comments on baking clay in the oven. My initial post evidentally came out sounding a little too strongly, so i just edited it to be more in line with your posts. My post was too simplified and didn't get the full meaning across of what I was trying to say.
Purplexime, sorry if I caused any confusion! For me it was easier to just buy a toaster oven because I wanted to do a bunch of baking for christmas gifts and didn't want to have to worry about how much was too much before I needed to wipe out the oven, etc. Also, in general I don't like to mix my art craft supplies and materials with kitchen related items that I eat off of or with, so that influences my decision as well. I have a friend who uses her kitchen blender for making paper, while I have a separate appliance for that as well. (Even though I've never made homemade paper--ha!)
So maybe I should have prefaced my answer by first admitting I'm a kitchen hygiene freak! LOL