need to take an object from point a to point b and back to a and your only allowed to touch the project once to start. any ideas? No batteries, electric or blowing on it allowed. You can use water and magnets.

To transport an object from point A to point B and back to A with only a single touch, while using water and magnets, you can consider the following idea:

1. Start by placing a container filled with water at point A. Ensure that the container can hold the object you wish to transport.
2. Attach a buoyant material or flotation device, such as a small foam block, to the object you need to transport. This will ensure that the object floats in water.
3. Using a magnet, carefully lower the object into the water and guide it towards point B. The magnetic force will attract and control the object's movement.
4. Once the object reaches point B, use another magnet to attract and lift the object out of the water.
5. Repeat step 3 to move the object back towards point A, using magnets to guide it.
6. Finally, at point A, use the magnet to lift the object out of the water again.

By utilizing the buoyancy of water and the magnetic force, you can transport the object from point A to point B and back to A while adhering to the given conditions.