they could get creative with things that they like to create their own. in the past year i have been to weddings where they have used pez dispensers, star wars figurines, and toys of the couple's college mascot... pretty mcuh anything can be stuck on the top of a cake! :)
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"to be nobody but yourself in a world which is doing its night and day to make you everybody else, means to fight the hardest battle which any human being can fight, and never stop trying." - ee cummings