Environmentalism

Measure the carbon footprint of your travels⚑

https://www.carbonfootprint.com/

There are also some calculators for events itself:

https://co2.myclimate.org/en/event_calculators/new https://psci.princeton.edu/events-emissions-calculator

Saving water⚑

Here are some small things I'm doing to save some water each day:

• Use the watering can or a bucket to gather the shower water until it's warm enough. I use this water to flush the toilet. It would be best if it were possible to fill up the toilet's deposit, but it's not easy.
• Use a glass of water to wet the toothbrush and rinse my mouth instead of using running water.