There used to be a typical antique mall jammed into this warehouse-like West Colfax building, but that was before Jen Schafer and her Blue Sky Books and Media took it over. Now it's a diamond in the rough: Essentially a community gathering place in progress, it's not only home to Schafer's sprawling used bookstore, which donates a percentage of all sales to Doctors Without Borders, but it also offers basement space to KGNU's Trust the Dust non-profit used CD and vinyl record store and Skull Gate Games, a haven for role-playing gamers looking for more of the same. Upstairs, there are artist studios, a gallery and a dance studio; until this month, the Free Boutique clothing exchange also held forth in part of the space, and the Holistic Business Center, an organization giving workshops for small business owners, is in the process of setting up an office. But Schafer is also trying to show it off as place to hang out without spending a lot of money, by encouraging artists, musicians, authors and poets to perform, meet, jam and otherwise make use of the space in a community-building way.