Sorry SAK skills. (Swiss Army Knife).
Below there are 25 clips available by Felix Immler.
Before you-tube and bushcraft classes there was Ron Hood. He was well known for his love of large blades. However he always said if he could only have one knife if stuck in the wilderness it would be a SAK.
https://www.survival.com/woodsmaster_.htm
I have the Soldier (green) and Hiker (black) models and am purchasing the Ranger to have a non serrated blade.
https://www.survivalsupplies.com.au/victorinox-ranger-78-m-grip
Very good https://is.gd/N1ikS2
Awesome https://is.gd/N1ikS2
Good https://is.gd/N1ikS2