Easy messy play idea and totally edible.  Muddy bin with cars, animals or Peppa figurines.

What you need:

• yogurt and cacao for mud;
• construction cars (or chunky cars if the bin is for a toddler);
• farm animals or other plastic figurines.

Mix some yogurt for with cacao to make the mud and add all the other toys in the bin.

Here the play was with daddy and they seem to have a good time.

Replace yogurt with flour and water mix for a cheaper version.