Holidays for Humanity has a few offerings you might want to peruse if your looking for eco, green, volunteer/service, and culturally-connected travel possibilities.
Some of their offerings are get-off-the-grid focused, some have a yoga component, many have volunteering options, and all are pretty darn idyllic at beaches or in jungle regions (or both). Try a stay at an eco-resort that has an onsite sea turtle rescue program and sanctuary so you can be of service steps from your door. How about a “Surfing Sustainability” program? Maybe a community-based volunteer program to install solar panels in off-grid, generator-reliant villages. Conservation programs, surf camp, an eco-treehouse resort, a luxury option that directly supports UNICEF…all these are available.
If you don’t share my intrigue and curiosity for Nicaragua, this organization that books “Holidays for the Soul” has dream destinations all over the world with a focus on integrity, community empowerment, and ecological stewardship.