Dowels and threaded rods never seem to stay put in their assigned storage nooks. Wooden dowels are apt to warp or break before they are used.

Cardboard cores from carpet rolls make excellent storage tubes for round material such as dowels. You can obtain the tubes from a local carpet dealer, then cut the tubes to various lengths (try 12", 20", and 30" for starters). Glue and nail wooden discs to a plywood base and fit the tubes over the discs. Or fit the tubes between ceiling joists.
—From the WOOD® magazine shop