Step A: Slide an LED onto one of your batteries (if the leads extend past the battery, shorten them with some wire cutters).
Wrap it up in tape (same as original Throwie tutorial), making sure that it is nice and secure and doesn’t flicker.
Place one of your magnets on top (positive side) and wrap up some more so it doesn’t slide.
Repeat Step A with your second LED, and place it on top of the magnet.
I oriented my LEDs opposite each other to cast more light throughout the jelly. Place a second magnet on top of that and wrap up with more tape.
You don’t really need this other magnet, but it adds a little extra holding power.