Let children play with sand in buckets. Almost any containers and utensils are fun to play with in the sand. Make soap bubbles. They can also use straws or green plastic berry baskets. Also let the children wash dishes.
Preschoolers like to make things with blocks and plastic building pieces.
Check to make sure wood blocks are smooth and free of splinters. Poke holes in the bottoms of plastic margarine tubs. Have the children fill them with water and watch it dribble out. When these children play with water and sand, give them toys like egg beaters, watering cans, and squeeze bottles. Preschoolers like to pretend.