try making your bodyweight exercises harder (therefore requiring more strength) by altering the exercises.
pushups try doing them on one leg. Or elevate your legs, ie your legs on your bed - hands on the floor. When either of these are too easy combine the two.
Also look at these sites for ideas.http://www.trainforstrength.com/index.shtmlhttp://www.combatfitness.co.uk/http://www.cbass.com/Pavel%27sLadders.htmhttp://bodybuildbid.com/articles/miscellan/workwoutwts.html
Beware my flying no hands cartwheel kick of doom