Step 2: Prepping your sponge
If you want, cut it a little shorter to fit your comfort. (we will be trimming it later)
Step 3: Wiring it up!
Wrap one of the stripped ends AROUND the sponge rectangle and use tape to secure it (regular tape works best)
Put the wire and sponge through the tube and pull the sponge up so that there's a little sticking out.
Finally, cut some tin foil out and wrap it around the tube with the sponge. MAKE SURE TO attach the other stripped end of the wire TO THE TIN FOIL!!!! Wrap electrical tape around the ends and wrap clear tape around the middle to keep it together!