Somebody else posted this at VF, thought I'd share here. If you scroll to the bottom there is a video with some pretty cool glute exercises using body weight and/or a band.
http://bretcontreras.com/band-glute-exercises-for-the-win-erin-mccombs-intriguing-training-methods/
http://bretcontreras.com/band-glute-exercises-for-the-win-erin-mccombs-intriguing-training-methods/