Talked to a trainer friend of mine and he recommended isometric movements. If you bring a towel and use your own bodys resistance. i.e. bent over towel row. Put your foot in the middle of a towel and pull up as hard as you can while bent over holding the ends of the towel.
Im sure you can think of a whole plethora of new movements by doing this, you just have to be creative. Hell...bring a shovel and dig...thats great for your lats, bis and forearms.