Answer by
JennyWren (53)
Astronomy, computer programming, collecting, geology, chess, studying insects, reptiles, or amphibians. Inventions, writing, drawing, painting, guitar, drums, robots, gardening, ham radio, gems, aquariums, camping, hiking, fishing, role-playing games, photography, film-making, magic, entrepreneurship, horses, cooking, r/c planes, electronics, archaeology, designing games, birdwatching, science, reading.
There may be a local group or club that meets and enjoys the same topic of interest.