I'm in the same boat. I applied last year and didn't get an assistantship. This year I've been doing Americorps actually working on a college campus so I hope that experience will help.
Last year I deferred my acceptance to Michigan State, but to be honest I didn't like it very much. I'm not sure if I will even bother interviewing again yet.
Last year I only applied to schools without GRE required but this year I decided to take the test so I could have more options applying. I've applied to NYU, U Penn, University of Vermont, Ohio State and Boston College.