The below list is from:
http://www.nal.usda.gov/afsic/AFSIC_pubs/altlist.htm

Farm and Home Enterprises
Services... 

Antique shop/Antique restoration 
Boat storage 
Direct marketing operations - U-pick, Community Supported Agriculture (CSA), farmstand 
Child care in country setting 
Composting services and products 
Custom machinery work 
Custom planting and care of window boxes and container annuals 
Custom planting and care of vegetable gardens 
Custom slaughter 
Farm sitting 
Gift shops 
Pet motels for large as well as small animals 
Religious services held on farm, e.g. sunrise Easter services, weddings 
Restaurant 
Seed and supplies distributor 
Small engine repair 
Taxidermy 
Recreation and Education... 

Barn dances 
Bed and breakfast 
Campground 
Chuck wagon 
Fee hunting and fishing/game farms 
Hunting, fishing, and nature hike guides 
Lectures on herbs, gardening at farm 
Museum of old farm equipment on working farm 
Petting zoo 
Sleigh rides with work horses 
Tours for public, school children 
Trail rides 
Vacations on farm 
Wagon trains 
Value-added Products/On-farm Processing... 

Cheese 
Cider and other apple products 
Confections and candles 
Corn snack foods 
Crafts 
Dried flowers, cultivated arid wild 
Dried Fruits 
Fresh or stone ground grains 
Furniture, e.g. outdoor chairs, picnic tables 
Honey and beeswax products 
Meat processing, e.g., jerky 
Sawmill 
Soapmaking 
Tanning hides 
Toys from wood 
Wheatweaving 
Winemaking 
Wool processing and spinning