Garbage bags, on the floor in pieces, in the top of that #$%#% tree at the field...

Seriously, here's a thread of interest:
http://www.rcuniverse.com/forum/m_14...tm.htm#1420891

...it's got some good ideas. I kinda like the stackable "X"s made of PVC...

You could also try just searching the forums for "rack" or "storage"... there's a bunch of ideas in there!

Hope this helps!