DIY Sand and Rock Box by FSPDT. Gdjk -> made this with toilet rolls (aka tunnels) and moon sand instead of play sand. My son loved playing with it. The moon sand cleans up nicely indoors but play sand will be easier to play with when using the small cars.
Dough made with 1 part hair conditioner, 2 parts corn starch. "Think of this as a mix between playdough and cloud dough. It is light and airy like cloud dough, but moulds better as the conditioner helps the cornstarch become more pliable.