Opera Pop-up Camper! Opera provides many luxuries and amenities you don't usually associate with camping. Features: teak veranda, ceramic toilet, electrically adjustable beds, water heater, hot air heater and low energy LED floor lighting.
Could be a business on wheels? Even a Hair salon, How about a little trailer full of treats - - buckeyes, peanut butter pinwheels, fudge, cupcakes. Sort of like the food trucks becoming so popular lately.
Designing for Small Spaces: 5 Tips from a Tiny Trailer