I am surprised that no geocachers have spoken up in this group....
There are some very good Geocoin producers out there who will produce
full color enamel coins in very short runs for reasonable money... I have had
a couple made myself... the other cool side to this is that they would all have
a individual serial number on them.... and would also be "trackable."
Heck you could set up a temporary "cache" at your local con... and have member
log in their coins to show they attended.... just for fun....
Another option that our Geocaching club has used is "Pathtags."
They are one sided (full color) and a tad smaller then average coins
BUT very reasonable for short runs...
Just some additional ideas.... Here is the last coin I picked up last week:
this is one that I had been missing from my collection.....
Like I said....just food for thought....
Cujo3131