Have them build an Acronym and see how silly and memorable they can make it...
Here, here is one my group did together...
When a janitor made mold another janitor verbally harrassed two poor tailless filliies piercingly because local Johns grant hazy gardens. Anyway, clearly harassment can make roses taller. Will hard cooling help roses to eventually kill Johns? No, for cars run between climbing bushes.
Why not check it against the list of Presidents.
Adam, John Quincey
Cleveland (second term)
Johnson, Lydon B.
Bush, George W.
Try making your own Acronym or improving this one and add it to the comments.