wow, i came up with something quicker than i thought
i thought of having it say 'one of' in the font/style similar to the actual one up logo (i know you mentioned that you wanted it to look a little different, and this is rather similar to the original design, though). the point for 'one of' is so whoever is wearing it can say "i'm
one of the supporters/friends/fans of
one up". imo, it's similar enough for people to recognize what it's for, but different enough to actually make people have to read it
