This is my foam tray glider. i made this out of foam meat trays from the grocery store (go to the meat department of the store and ask for a couple of trays, if you tell it is for a science project, they will give you a few. You need 2.), Hot glue (low temp, hi temp will melt the foam. I have a dual temp gun, so i can use hi and low when i need them.),cardboard, a bamboo skewer, a hammer and optional: a foam plate, a stick and a rubber band.