Pragulic want to change the public perception of homeless people in Prague, as well as give the opportunity for those without a home to integrate into society. They provide unique walking tours with homeless guides, with each tour based around the life story of the guide. This provides a regular source of income for the guides and is a unique way to explore otherwise unvisited parts of the city. Tours cost 250 CZK for an adult (prices vary for concessions and groups of 10 or more). Check them out here.