- Recycle water bottle (small, 12 oz, or 2 liter)
- Rice and/or beans (optional: add colorful beads)
- Colored electrical tape
Need I say more? Funnel the rice and/or beans into the small water bottle using a piece of paper rolled to the shape of a cone for a funnel. Then put glue around the inside of the water bottle cap, and finally, to hopefully keep that cap sealed tight, wrap the outside of the water bottle cap with colorful electrical tape and… start shaking.