Been trying to find a nice, easy to get, clay/putty for use in kitbashes, and I think I've found something that may work. Crayola Air Dry Clay. Probably not the "ideal" thing to use, but it'll be easy for me to get at a store (I'd prefer to buy it in-person than buy something online). Posting this to get people with more experience's opinions and input. I'm gong to try and get some this weekend. If it doesn't work, it's only $5, and I'll just find something else to do with it.