This is a great way to remove solar cell from your e-wearables during washing.
1. flexible solar cells. You can buy them here
2. Fasteners. Best if you use 7 mm fasteners. And pliers. You can find 7 mm fasteners and pliers here
3. fine electric wire
Step 1: Connecting the solar cell
The cell I used has a plastic film on top of both terminals, so to touch the conductive metal you need to lift the film up.
To connect the cell get a fastener, place the ring with teeth toward the plastic, on the side of the silicon, place the bottom of the cell over a piece of cardboard and press with your thumb. This way the teeth penetrate inside through the plastic film and through the metal terminal.