Pick locks, lift purses, set or disarm traps, or manipulate objects with fingers that shouldn’t be that quick.
The lock does not know it is being opened. The pocket does not know it has been emptied. The snare does not know it was set there. There is a purity to working with your hands — no words required, no eye contact, no convincing. You either can or you can’t, and the clever thing is making sure no one watches long enough to find out which.
Cunning is the skill of what your hands do — picking locks, lifting purses, disarming traps, planting false evidence, rigging mechanisms, performing sleight of hand. Make a Cunning (Agility) Trial whenever you are manipulating an object with precision and without being noticed. For moving your body without being seen, see Sneak (Agility); for verbal trickery and false identities, see Guile (Ego).
Examples: springing a lock in the dark with two bent nails; lifting a sealed letter without breaking the wax; disarming a pressure plate before someone else finds it; palming a coin from the wrong side of the table.