What can I do with Styrofoam cups?

Here are some repurpose ideas: https://get-green-now.com/reuse-styrofoam/

Best seed starters ever! Punch holes with a pencil in the bottom to drain.

Styrofoam cups are good for mixing some types of paints for crafts, sorting beads, anything to hold "stuff" for crafts...

Also can partially crumple up/crush and use for drainage material especially in large planters. Makes them much lighter and easier to move than using stones for drainage.

Suzanne,. If they are three years old, they may not be to strong. You can purchase a craft book on what you can make with styrofoam cups, along with other crafts. You can make a wreath, and a hanger. You can put the cups face out, before you do, make a whole in the bottom of the cup, where you'll pull in a Christmas pick. These are picks with long wire. Once you pull the pick through with the wire on the end, wrap it around the hanger. I hope you get the idea. You can do this for any season, You can spray the cups any color you want. Purchase these picks at Dollar Tree. Aloha!

77 best Styrofoam cup crafts images on Pinterest | Crafts for kids, Cup ...

https://www.pinterest.com/merf2203/styrofoam-cup-crafts