Waxy cardboard containers that milk and juice products are packaged in can be rinsed out and reused. Crafty people love to use these containers when making homemade candles or soap. Just fill the containers with melted wax or glycerin soap, add a wick, dye or scent, and chill in the fridge. In an hour or so, you can peel off the paper and reveal and perfectly molded new candle or block of soap. And the best part? If your community recycles these containers, you can toss the peeled cardboard into your recycling bin.