Found these Portable Stainless Steel Fishing Rod Holders for $14.95. If your into catfishing and have several poles out at the same time these little rod holders work like a charm.

Features:
Stainless steel material, very durable.
Flat design greatly increases firmness and stability.
Easy to install and remove.
Support maximum diameter of 3.2cm of the fishing rod handle.
Two brackets can be combined as a whole, compact to carry.