BTDT, I use two plastic storage bins that were sold for storing
Christmas wrapping paper!  By Rubermaid, found them at a Kmart right
after Xmas two years ago.  Larry Chase is using a bungee cord across the
opening.
I've drawn up plans to make some compartments from wood for the area,
with a fold-down front panel to allow access to a forward compartment
without lifting the top.