Antique Collecting (Includes Authenticating, Dealing, Repairing, and Restoring American and International Collectibles)

Art Collecting (Includes Art Galleries, Artists and their Monograms and Signatures, Corporate Collections, Dealers, and How To Collect)

Astronomy (Includes Comet and Planet Tracking, Computer Programs, Satellites, Sky Mapping, Space Observatories, Star Gazing, Telescopes)

Autograph Collecting (Includes Baseball Players, Celebrities, Confederacy Leaders, Literary Figures, Presidents, Public Figures, Revolutionary War Leaders, and Signers of the Declaration of Independence)

Automotive Hobbies (Includes Antique and Classic Cars, Auto Racing, Diesel Engines, Electric Cars, Modern Cars, Race Cars and Race Car Drivers, Refinishing, Repair, Restoration, and Servicing)

Bird Watching (Includes land and water bird behavior, habitats, and identification)

Board and Card Games (Includes Backgammon, Bingo, Blackjack, Bridge, Checkers, Chess, Cribbage, Euchre, Game Preventing,
Knowledge Games, Monopoly, Odyssey, Othello, Poker, Scrabble, Solitaire, Trivial Pursuit, and Twister)

Book Collecting (Includes Antiquarian, Comic Books, Manuscripts, Miniatures, Rare Books, Secondhand Books, and Specialist Books)

Business Startup (there are many Possibilities)

Caving (Includes Speleology, Spelunking, and Techniques)

Ceramics (Includes Ceramic Formulas, Clay, Crafts, Porcelains, Potter's Marks, Pottery, Projects, and Techniques)

Collecting (Antiques, Collectibles, Collector's Editions, Memorabilia, Nostalgia, and Trivia)

Crafts (Includes Basket Weaving, Beadcraft, Braiding, Crocheting, Designs, Floral Arranging, Handicrafts, Knitting, Materials and Fabrics, Modelmaking, Needlework, Projects, Quilting, Sewing, Soft Sculpture, Tatting, and Lacemaking)

Dolls (Antique, Barbie, G.I. Joe, Miniature, Modern, and Soft Dolls, Collecting, Costuming, Dollmaking, Repairing, Restoring, and Teddy Bears)

Emphemera (Includes Advertising, Baseball:. Cards, Broadsides, Christmas Cards, Cigar Boxes, Labels, Matchbooks, Paper Dolls and Toys, Playing Cards, Postcards, Posters, Railroad Maps, Songsheets, and Tradecards)

Fish and Aquariums (Includes Breeding, Caring For, and Diseases of Exotic and j Tropical Fish, Aquarium Set-up and Care)

Games (Includes Adventure, Billiards, Bowling, Computer Games, Crosswords, Fantasy Games, Mah Jongg, Pinball, Puzzles, Recreational Games, Solo Games, Sports, Strategy, Street Games, Table Tennis, Tiddlywinks, and Trivia, Video, and War Games)

Gardening (Includes Cacti, Flowers, Foliage, Fruit, Grass, Herb, Organic Gardening, Rock Gardening, and Vegetables)

Genealogy (Includes Tracing and Researching Family Trees and History)

Glass (Includes Antique, Carnival, Crystal, Depression Era, Etched, Heisey, Lalique, Pattern, Pressed, Stained, Steuben, Tiffany and Victorian Glass)

Humor (Includes Anecdotes, Circuses, Clowns, Comedians, Comedy, Humorists, ~ Laughter, Political Humor, Satire, and Wit)

Insects (Includes Breeding, Collecting, Preserving, Studying Bees, Butterflies, Spiders, and Other Insects)

Magic (Includes Conjuring, Effects, Evocations, Illusions, Magic Tricks, and Magicians)

Military History (Includes Battlefields, Battles, Cavalry, Historic Sites, Medals, Military Terms, Miniature Figures, National Monuments, Naval History, Re-enactment Groups, and Wars)

Modelmaking and Collecting (Includes Model Aircraft, Airports, Antique Cars, Automobiles, Boats, Farm Toys, Farmyards)

Military Vehicles (Rockets, Ships, Soldiers, Trains, Model Car Racing, Plastic Modeling, and Railroading)

Movies (Includes Animated Movies, Cinematography, Filmmakers and Directors, Motion Pictures, and Videos)

Music Appreciation (Includes Chamber, Christian, Country, Jazz, Pop, Rock, and Sacred Music Elements, Forms, Listening, Styles, and Understanding)

Music Performance (Includes Careers, Computer and Electronic Music, Fundamentals, Home Recording, Instrument Making, and Songwriting)

Numismatics (Includes Classifying, Preserving, and Presenting Commemorative and Rare Coins and Paper Money)

Painting (Includes Materials, Methods, and Techniques for Painting and Drawing in the Fine or Commercial Arts)

Personal Computing (Includes Applications, Computer Languages, Computer Music and Sound, Databases, Desktop Publishing, Games, Graphics, Hardware, Personal, Computers, Programming, and Software)

Pets (Includes Feeding and Training Amphibians, Birds, Cats, Dogs, Gerbils, Guinea Pigs, Hamsters, Horses, Insects, Rabbits, Rodents, and Turtles)

Philately (Includes First Days, Grading, Imperforates, Inverts, Postage Stamp Cancellations, and Postal Stationery)

Photography (Includes Cameras, Equipment, Film Developing, Lighting, Photographers, Photographic Procedures, Photographic Styles and Techniques, Printing Negatives, and Slides)

Prints and Printmaking (Includes Artistic and Industrial Techniques, Engraving, Manual and Mechanical Processes, Printmakers, Procedures, Production, and Supplies)

Railroadiana (Includes Classic Toy Trains, Common Carrier Railroads, Electric Trains, Freight Cars, Locomotives, Narrow Gage Railways, Railroad Maps, Railroaders, Railroads, Spikes, and Steam Trains)

Rocks, Minerals and Gems (Includes Collecting, Identifying, and Preserving, Fossils, Gem Cutting, Gemology, Jewelry Making and Mineralogy)

Shell Collecting (Includes Identifying, Cleaning, and Preserving Land, Freshwater, and Marine Shells)

Sports Card Collecting (Includes Baseball, Basketball, Boxing, Football, HOCkey, and Hall of Fame Cards)

Treasure Hunting (Includes Coin Hunting, Gold and Metal Prospecting, Hidden and Sunken Treasure, and Treasure Maps, Charts, Signs and Symbols)

Weather Forecasting (Includes Analysis, Atmospheric Science, Climates, Experiments, Meteorology, Observing, Data Collecting and Forcasting)

Woodworking (Includes Carpentry, Carving, Crafts, Finishing, Furniture Projects, Joints, Marquetry, Materials, Processes, and Woodturning)