The elderly so often get forgotten about.
You could volunteer for meals on wheels, shovel snow, cut grass, help with the garden or better yet just go to chat. The nursing home or the community center.
Senior year of high school I played bingo with the folks at a very poor nursing home.
It was mandatory for a class I was taking but it was a lot of fun and very rewarding.
Great job, keep posting on what you decide.
The best time to plant a tree was 20 years ago, the second best time is today.