In reply to llamaglama:
Tie a theraband to your forearms, put the middle under your feet when standing up and you can do bicep curls. It isn't a heavy weight, but if you do them fairly quickly and for a minute or two you should start getting very pumped arms which you can fight through and build your pump endurance.
You could use the theraband for biceps, triceps, most if not all the shoulder muscles and some back too.
You could also give your core a workout doing planks and following a video called 'ab ripper x'.
Good luck!
Post edited at 19:44