Shower Organizer Shelf Wedges

This is a set of replacement wedges used to position the baskets/shelves in those tall pole-style shower organizers. The pole goes from the bath to the ceiling, and the shelves slide up and down it. The shelves are kept in place using a pair of small plastic wedges that fit between the pole and the shelf.

This looks like the right sort of thing:
http://www.amazon.com/Better-Bath-Style-Rageous-Tension-Organizer/dp/B003JC05GK/ref=pd_sim_sbs_hg_57