I love creative silicone trays. So many uses from jello molds to ice cubes and more.
Kids will surely love to have ice shaped like numbers in their juices!
These silicon trays can be used for making ice, jello, cookies - you name it. They are freezer and oven safe. I picture a 40th birthday party with ice cubes in 4 and 0. Also a great tool for teaching kids their numbers - who wouldn't like to learn their number shapes with jello?