This is a great way to reuse cardboard and turn it into something beautiful for earth day! This easy and fun cardboard craft that teaches kids about the importance of recycling and taking care of our planet earth. Spin the cardboard around on the recycled straw to see an amazing optical illusion. #earthday #kidscrafts #easycraft #cardboardcrafts #kidsactivities #opticalillusion #homeschool #recyclecrafts #crafty | Timm Sevitz