@thoughttanktv0: How to make a working paper cup helicopter with a rubber band motor! 🚁 Plastic-free & simple physics STEM project you can try at home. Comment if you want more easy DIY science crafts! 🧪👇 #DIYCraft #STEMExperiments #PaperCrafts #LearnOnTikTok #FunScience #CraftIdeas