Your PDF file mentioned "implement" handles -- many of these are made out of hickory or ash, both of which make excellent walking stick wood. You mentioned buying them, but it might be a good idea to find a woods that is available for your scouts to harvest their own; although drying time will have to be considered a part of the process, however, one of the best hiking sticks I ever made, I made while on a long hike and still use it to this day 25 years later.