This is a list of hobbies.

Animal-related

• Beekeeping
• Dog breeding
• Herpetoculture
• Animal fancy - Keeping pet or show animals
• Horses
• Animal rescue (injured or orphaned wild or domestic animals)

Arts and Crafts

• Blacksmithing
• Crochet
• Dollhouses
• Doll making
• Drawing
• Embroidery
• Knitting
• Miniature figures
• Painting
  • Figure painting (hobby)
  • Tole painting
• Pottery
• Quilting
• Scrapbooking
• Sculpture
• Sewing
• Stained glass
• Stamping
• Warm glass
• Wood carving
• Woodworking

Collecting

• Antiques
• Artwork
• Autographs
• Books
• Classic videogames
• Coins
• Collecting fossils
• Comic books
• Currency
• Dumpster diving
• Found objects
• Microchips
• Phillumenism (match-box labels)
• Postcards
• Records
• Collecting Rocks and Minerals
• Scale models
• Shopping lists
• Stamps
• Trading cards such as baseball cards
• Wine labels

Computer-related

• 3D computer graphics design
• Animation design
• Computer games
• Computer programming
  • Open source and the free software movement
• Operating systems, e.g. GNU/Linux
• Retrocomputing

Cooking

DIY (Do It Yourself)

• Home Repairs

Electronics

• Hardware hacking
• Amateur radio and CB radio
• Robots

Fan fiction

Film-making

Flirting

Games

• Board games
  • Chess
  • Go
  • Pente
  • Tournament Scrabble
• Card games
  • Bridge
  • Poker
  • Backgammon
  • Gin Rummy
• Dominoes
• Wargaming, sometimes with miniatures
• Role-playing games

Geofiction, including model nations

Historical reenactment, as in the Society for Creative Anachronism

Homebrewing

Interactive fiction

Internet-based hobbies

• Wikipedia
• Google Whacking
• Newsgroups
• Currency bill tracking
• Geocaching a modern day form of treasure hunting
• GPS drawing
• BookCrossing

Literature

• Reading
• Writing
• Learning foreign languages
• Constructed languages (conlanging)

Machining

Model (scale model) building

• Matchstick models
• Military models
• Model aircraft -- civil and military
• Model cars, including radio-controlled cars
• Model commercial vehicles
• Model houses
• Model figures -- historical and military
• Model military vehicles -- including armored vehicles
• Model nations
• Model railways/railroads
• Model rockets
• Model ships -- civil and military
• Movie and Pop Culture-based models

Motor vehicles

• Antique cars
• Kit-cars
• Motorcycles
• Off-roading
• Trucks

Music

• Singing and playing musical instruments
• Musical composition and MIDI compostion

Observation

• Amateur astronomy
• Geyser gazing
• Metrophilia
• Train, plane, and bus spotting

Outdoor nature activities

• Birdfeeding, birding, and birdwatching
• Butterfly watching
• Caving
• Canoeing and kayaking
• Gardening, including forest gardening, organic gardening, wildlife gardening, and permaculture
• Hiking
• Kite flying
• Mountain climbing
• Rafting
• Stone skipping
• Rockhounding (rock and mineral hunting/collecting)
• Walking

Photography

• Kite photography

Physics demos or experiments

Puzzles

• Jigsaw puzzle
• Crossword puzzles
• Word seek puzzles

Research-related

• Genealogy
• Hagiography

Restoration of highly entropic artifacts

• Antique machinery
• Early computers
• Houses
• Sailboats, early motorized boats

Sports or other physical activities

• Baseball, softball, and rounders
• Bowling
• Cycling
• Dance
• Fantasy sports
• Freshwater and saltwater fishing, including fly fishing
• Gliding
• Hunting
• Martial Arts
• Sailing
• Shooting rifles, pistols, and shotguns
• Table tennis where the level of play isn't really hindered by advanced age
• Ultimate frisbee

Toys of some sophistication

• LEGO, including brikwars, and Lego Mindstorms
• Radio control toys