Remember that green air dry, marshmallowy 'clay' I used the other day? My oldest described what it feels like. Have you ever worked with fun foam? It feels like thick, soft fun foam. It doesn't dry hard and brittle like I was expecting. I still think it is very neat stuff. Today I wondered if I could stick things to it. So far it looks like you can. Although I don't think it is totally dry yet. I made a turtle body and placed a green glass "stone" on it for the shell. I have a feeling that i will be able to pick the shell/stone right off it tomorrow if i want to. But I don't want to, so I won't be doing it intentionally!