I have been planing for years to establish houses where one could learn languages by using them in all kind of situations. The best would be if they where self sufficient with a big garden and workshops. There would be one language per house. Some people would permanently live there and others would be guests who stay there for a while. That is especially for languages which have not enough speakers for one could just stay in the country, where it is spoken, for a while. It would also be to investigate the languages and to try them out.