You will need:
- A roll of foil paper
- Small plastic boats or paper boats
- A hose pipe
- Unroll a long piece of foil paper onto the grass, preferably down a small hill or slope in your garden
- Smooth the foil paper and make a lip on each side of the foil paper
- Place a running hose pipe on the top end of the foil paper stream
- Place small boats at the top of foil stream and watch the boats sail down the foil stream!