http://www.houseconcerts.org/hc.html
Another killer submission to Cool Tools, this is an exhaustive (and free!) guide to putting on a house concert. One of my goals is to start a concert series akin to that of the group we met in Grand Rapids; they charge a reasonable annual membership and use the cash to lure bands that would otherwise play only Toronto/Detroit and Chicago. Local businesses give up their space for the concert, and EVERYONE has a great time. Super-inspiring, and not that difficult to pull off! What a wonderful karmic investment!