Homemade Light Sabers

Start with styrofoam rods (I bought mine at Hobby Lobby). I thought about using empty wrapping paper rolls, but given how hard my kids like to hit each other when "play" fighting, I decided against it.

Spray paint half of them green and half of them red (different sides of "the Force" and for variety).

Use silver or gray duct tape and wrap ends to create the handle.