Painting on tarps

I went shopping for canvas tarps. Robin had offered some yellow canvas to William but end up she wants to also repurpose it so the drawings would need to be impermanent (probably chalk). That might be cool, but we wanted to consider options that allowed him to be the one to repurpose things. Home Depot was supposed to have canvas drop cloths the size he needed and a decent price, but we I finally found them at the store, the cost was quite a bit higher. I did find this white material, very much like tyvek, for cheap so William is testing it with paint. It dries quickly and doesn't crack.