Hi Cliodhna,
You posed some brilliant ideas for slowing doing climate change with the efforts in your school. We actually did the hand towel suggestion this year as the children were going through reams of blue paper unnecessarily on a daily basis and it actually worked really well. The green school committee in our school had gone around the rooms and looked for suggestions on what we could do to conserve energy and stop waste. They actually brought in small facecloths instead in a zip lock and kept it in their bags. We also encourage children to bring home their wastage for the reasons you suggested.