sturdy stick, hiking staff size.
Each scout could make their own staff also. Buy a hiking staff from the Scout Shop

4 feet of leather lace

Create a meaningful staff for your den or patrol's flag. Hang awards and mementos from the staff that the group has acquired. Keep the staff with the scouts as they advance together. 
 
Prepare the staff by leaving it natural, or removing the bark, sanding, and varnishing. 
Lash a crosspiece near the top for the patrol flag. 
Drill holes every 3 or 4 inches starting at the top. Attach a 1 foot loop of leather lace in each hole. Hang ribbons and awards from these loops. 
 
The Scout Shop sells staff medallions for each rank from Tiger to Eagle. You could purchase and attach one of these as the den or patrol advances in rank. 
 
Feathers, leather fobs, and other items can be added for patrol campouts, hikes, or other events.