Hi [Friend's Name],

I hope you're doing well. I wanted to share with you my recent experience of participating in an environmental clean-up. It was truly eye-opening to see the amount of litter and pollution in our surroundings. We worked together as a team to collect and dispose of the waste properly. It felt great to contribute to the preservation of our environment. I believe such initiatives are crucial in creating a cleaner and healthier planet for future generations.

Take care,
[Your Name]