If your dogs are not neutered or spayed, have medical needs that prevent them from joining group play, have a bit of social anxiety, or are unable to join camp for temperament reasons,
then pet daycare is an excellent option for your pets.
Then there are the home - based businesses: bed and breakfasts (particularly in demand in tourist areas); baby sitting services or
daycare;
pet boarding; music lessons and tutoring; antiques (great if you have an old barn or large shed on your property)... the list could go on and on.