You could...
-do research, especially if your residency has a research reqmt, you can get that out of the way
-get a masters degree in something MPH, MBA, etc..
-travel - do something totally unrelated to medicine
-teach for Kaplan - make $$
-take step 3, get licensed, see if you can moonlight anywhere - depends on what state you're in
ALSO, while you are interviewing for 2006, you can ask if there are any available positions for PGY2 starting in 2005. When I was interviewing, I met several residents who matched that way - I think one was at Columbia/Cornell, one at UPenn??