The upper back - this is a weak point for a vast majority of powerlifters. Use this set up to build up your upper back while you don't have access to the gym.
What you need:
PVC pipe, broom, rake, etc...
EliteFTS band - micro mini, red mini, green monster, light orange
How to:
Band around your wrists
Grab the 'bar'
Bend over and step on the band
Widen your grip
Snatch grip RDL's for time - 3-4 sets of 30-60 seconds for your YOKE
[youtube=http://www.youtube.com/watch?v=dWNUti5GRMs]