I needed to hang a 16" bike from the ladder rack for a trip. Looked at racks that cost nearly as much as the bike itself.
Solved it with a couple large plastic S-Biners from Nite-Ize and some bungee cords , Works great. Would also work great for chairs, etc.
Check them out here:
http://www.niteize.com/product/S-Biner-Plastic-10.asp