Fill Containers with Water and Freeze
The night before your hunt, ask your children to help you fill the containers (gelatin molds or tube pans, cups, plastic storage containers, sand pails, bowls, etc.) with water. Add enough food coloring to each container to dye the water. Tint the water for the ice cube trays before filling. If it’s cold enough outside, take them outside and let them freeze overnight. Otherwise put them in your freezer.