I speak from fourteen years experience of telecommuting from my home office.
Many people utilize their knowledge from a hobby or passion.
Consider pooling your experiences and start a newsletter for others with the same interests. Open an online mall specializing in boat accessories or ski wear. It can be anything from gardening to hiking or collecting stamps. Your family will be more likely to accept the long hours associated with a new and growing business if they're a part of it. Even younger ones can help with mailings, choosing a logo or business name.