String bubbles - 2 straws and 1 piece of yarn - string yarn through both straws, tie a knot, then rearrange into a square. Can do bubble 'windows' or use it to blow large bubbles. Get hand wet w/bubble solution and you can stick your hand through it.
Make a backyard bowling alley. Add food coloring to clear plastic bottles of water. Use party streamers as lane margins. Add glow sticks for night bowling. (These would make great outdoor table nightlights also with the glowsticks, gonna try it!
DIY Catapults for Kids - Coffee Cups and Crayons Awesome STEM Activity for Kids--Make a Craft Stick Catapult using wooden craft sticks, paint and pom poms! If you absolutely love arts and crafts you actually will enjoy our website!