You can tow the 'Bicycle Camper' from the Danish company Wide Path Camper as a trailer behind your bicycle. The plastic version has a length of 1.5 meters, but when you unfold it, the camper becomes no less than 2.8 meters long. According to the makers, you can build it up within a few minutes, complete with a seating area and table for four people. 
Also, you can convert the seating area into a bed measuring 200cm by 90cm. Under the bed is a large storage space. Standing is not possible, as the camper is 1.45 meters high. You pay about €4000 ($4850) for the mini camper. You can also order many extras, such as a 10-watt solar panel for the roof of the micro-mobile home. Spotted in Hetkanwel.