Anything new under the sun?

Does anyone have any tips on just thinking out of the box while soloing? I've learned quite a few modes, (pentatonic, melodic minor, whole tone, ionian, etc) but I always seem to fall back on the pentatonic scale for most of my improv. That's because for the longest time it is the only scale I knew (and also my favorite sounding). So I guess maybe I have ruined myself a little.