Having lived near a river in the Ozarks growing up, just off a "hollar" (backwater), I found many "Beaver" sticks, or saplings that had been cut down and stripped of bark by beavers. I tended to pick the larger ones that were right about my height. Trimming was accomplished using a cheap Pakistan lock-back, or my "Survival knife" (you know, the ones with the hollow handle, compass at the butt, and saw teeth).
These days, I have started choosing smaller sticks that are a bit easier to wield, and have a few in my closet for camping/hiking, or long days at the zoo or local Rennaisance Festival. I carve on these while I sit outside grilling, in the summer, usually with whatever knife is on me. Nowadays, it's mostly a Case/Bose Lanny's clip, or the 2012 Bladeforums Traditional Trapper.
One that I had harvested during a local "Wilderness Reclamation Project" was cut during late fall, and the leaves were already gone. Next summer, I was using the stick in the rain, and started smelling maple syrup. Yup, it was a maple sapling.
One of mine recently had a stint in a production of "The Hobbit" that my kids were in, and was used as Gandalf's staff.