The accidental contact is the starting point
Under Rule 11, accidental contact with a person or equipment normally brings no penalty. For a shot from off the putting green, the resulting ball is normally played as it lies. Deliberate positioning to deflect it is a different matter.
Suppose a player’s mishit clips their own stationary bag and rolls onto the fairway. The favourable outcome may look unfair, but the direction of the bounce does not itself establish a penalty. The relevant distinction is accidental contact versus an action intended to influence the moving ball.
Watch what happens after the rebound
A ball that bounces off a bag and settles on grass is different from one coming to rest on a person or moving outside influence; the rule contains specific relief procedures. Keep the example narrow rather than treating every contact as permission to play from any final location.
The replay should show where the equipment was before the stroke and whether anyone moved it to affect the ball. It cannot establish intent merely from a fortunate rebound. This method also prevents an old remembered penalty from being applied automatically to current rules. Identify the accident, the final resting place and any evidence of deliberate interference before explaining the score.
Questions answered
Does a lucky bounce from the player’s bag automatically add a stroke?
No. Accidental contact normally carries no penalty.
Is deliberately placing equipment to stop the ball treated the same?
No. Deliberate deflection is separately regulated.
Sources & further reading
Official references for the subjects discussed. Service terms and device software can change.