OK, I just received my shipment of 30 lbs. of Chavant NSP Medium clay. Yes, it's for the backpack, and I need to know how to heat & soften this stuff up. Previously other members have chimed in and told me how to make a box with a light bulb inside to provide heat. I don't have time to go into all that. I was thinking about using a crock pot. Nice thing about it, it has several heat settings. Any other ideas?