Normally I try to recycle and reuse as much as I can in my craft activities but I lost patience with trying to gather together enough scrappy little bits of bubble wrap for felt making school and invested in a giant roll of all of my own. I also bought eight lengths of pipe insulation foam to roll the larger pieces of felt around and give them what for. I'm not a milk drinker but asked friends to collected for me enough empty milk cartons for the children to use as watering cans when they come to damp down their felt. Its easy to poke holes in the plastic lids and they make excellent little sprays. This helped to salve my carbon conscience a bit.