Boy Scout Troop needs planispheres

Hi. I will be doing a presentation for a Boy Scout Astronomy Merit Badge in the next couple of months, and I'd like to know if anyone has perhaps 60 or so small plastic planispheres they would like to donate. I considered printing some out on card stock, but am hoping for something more lasting. Something they can take along on campouts keeps their level of interest up. Please let me know if you have any.

Sincerely
Mike Vollmer

In case you can't find any, try here:
skymaps dot com/store/cat04 dot html