First, choose branch/sapling/plant of choice. Affix one's Canine Pearly Whites on branch, TUG! If unable to uproot plant/shrub/sapling or tear branch from main tree, use paws and hunky body to hold down the GREEN of choice.
With Green in place, CHEW to Puppy Heart's Content!
... until Yelping Human comes along (usually hopping mad) and abruptly ends BONE-sai session ...:p