I use The carpet adhesive from Home Depot. You can find it by the carpet and tile area. The plastic container says 6700 in green writing on it. I dilute it with about 3 parts ammonia to 1 part adhesive and this year I did 8 skulls and 4 sets of hands and only went through about 3/4 of a container. It works really well. I think the container is about $6 for 1 quart. Here is a picture of some heads I made with it.