I will keep it simple today: add push-ups to your routine today....if you are still a beginner then do 3 sets 10 with knees, on the wall or couch.
If advanced to 3 sets 10 military style, or do with on leg elevated (just lift one leg up), do a set with both feet elevated like on a chair or a bench or a physical therapy ball (you know the big bouncy ball)
If extreme then do the tricep push-up on a medicine ball.
Push-ups are a true strength builder and great all over body toning exercise!

http://www.google.com/search?num=10&hl=en&site=imghp&tbm=isch&source=hp&biw=1024&bih=675&q=push+ups&oq=push&gs_l=img.1.2.0l10.1267.2461.0.4526.4.4.0.0.0.0.290.727.1j1j2.4.0...0.0...1ac.1.2--xx1eCD10

I thought the pictures might help you!

Peace,
WW