Weather: Fill the cup with water. Put shaving cream on top for a cloud. Explain that when clouds get really heavy with water, it rains! Then put blue food colouring on top of the cloud, and watch it rain.
Newton's First: with raw eggs. Pinner said: "ok, this is cool! Our family just tried it. I wish I had, had a camera for my husband's face when I knocked the pie pan! lol The kids think this is SO cool!"