Here I’ll give you a start;
Enroll in an art class
Learn guitar
Travel to a foreign land with a volunteer program
Learn a language
Go birdwatching
Learn to skateboard
Join a martial art
Learn to fly
Volunteer at a local service organization
Bake cookies for random neighbors
Build a darkroom and learn photography the old fashioned way
Take blacksmithing lessons
Go running
Take a long walk
Go to your local library and study a new subject
Call a friend for coffee
Go to an AA meeting
.....