This is a hard haiku constraint because TOKEN is abstract and unstable. It can mean symbol, substitute, gesture, prize, or reduced status, and haiku usually resists that kind of conceptual looseness unless the poem gives the word a very specific job. Mick’s “the SCALE of GRIEF rose / that he was BOOED for good deeds— / a TOKEN soldier” is a good example of handling that well: the constraint words are absorbed into one emotional situation, so TOKEN arrives as wound and judgment rather than as a loose label. Across the set, the stronger poems keep the haiku alive by making the target word do actual work inside the poem’s logic — as offering, irony, type, consolation, or diminishment.