I found this recipe for "cloud dough" on Play Create Explore. Having never played with Moon Dough, I don't know how similar it is, but the girls certainly enjoyed playing with it. It is dry, yet builds like wet sand. It is simply made by mixing 8 parts white flour with 1 part baby oil and it smells great! I have no idea how long it will keep...I guess we will find out! I stored it in a large tupperware bin, but I have mind to make a larger batch one day for a sensory bin.