Need to knock out an unsuspecting younger version of one of your own crew? Why, that calls for a conveniently-placed nearby object that would get the job done if smashed across the head of your target. Its down to Sara Lance to knock out 1975s Martin Stein, but her weapon of choice is an interesting one. Fitting in to the younger Steins hobbies, its a huge bong that White Canary uses to lay out the unsuspecting young Stein. Talk about biting the hand that feeds you or the hand that passes you a joint.