I think one of those Rubbermaid tough totes with a lid might work. They make a small one that is about a foot high. Only problem is that it tends to move around if not secured. It does seem to have a non interesting look to it. Open stuff may just invite temptation to see what that is, depending on where you live/park.
WARNING & DISCLAIMER:
SELECT AND USE OUTDOORS AND SURVIVAL EQUIPMENT, SUPPLIES AND TECHNIQUES AT YOUR OWN RISK. Information posted
on this forum is not reviewed for accuracy and may not be reliable, use at your own risk. Please
review the full WARNING & DISCLAIMER about information on this
site.