Make it up like a hockey jersey with a number of your choice and sweet name on the back.
We had a street hockey team in high school and our jersey's were t shirts with a logo and we decorated the back however.....Mine was #7 with "Danger" as my name.
What's your artistic skill level? A picture of Martin Luther King Jr holding a popsicle, with the caption "I have a Dreamsicle" is guaranteed to get laughs/frowns/a punch in the face.
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"Glitter is the herpes of craft supplies" - Demetri Martin.