here is what i have in mind:

perhaps instead of having a stud on the top, Will would be able to add a little (emphasis on little) "button" on top, just like the one in the picture.
There is also the posabilty for a design like the ones used on the european front. (yes i know its young Indiana Jones :)
http://www.indyintheclassroom.com/news/images/indy_trenches.jpg




