I keep my bibs at the back of my door, hanging. I use a binder ring to keep it together.
Before, I used to keep my bibs and race maps in a binder folder, it was expensive and it takes space and lastly I don't get to see it (I can, only if I open the binder). I got this idea from a documentary called "Spirit of the Marathon." A couple had some of their bibs in a binder ring and some on a frame - I thought it was cool.
How about you, do you keep your bibs? If, where do you keep them?