The standard toothbrush cannot be tossed into your recycling bin. It's made of hard plastic, nylon bristles, and packaged in plastic, most of which are not biodegradable. But in an effort to change the fate of many toothbrushes, Colgate and Sam's Club have partnered with TerraCycle to recycle them. You can ship your Colgate toothbrushes in for free and they will be upcycled into useful items like school supplies.