What seemed to be most effective means of protest by the patriots?

The boycott of the stamp act was the most famous reaction of the patriots (not to mention one of the first) and caught the attention of the British empire. This is an arguable subject, but I'd consider it logical to consider the boycott as the most effective because it was the first protest and the one that sparked the most extreme reactions by the patriots towards the British. Most of which involved getting hammered and burning down buildings or threatening enforcers with effigies hung on trees by the neck.