Customized Name Buttons

I’m thinking about selling customized name buttons like those above at Connichi or other Conventions (maybe even online?).
One could choose a name, the own, a friend’s or even a nickname and a theme together with one’s favorite color, a pattern, etc.
The button would be drawn and pressed live at the Con so one could get it half an hour later^^
Paying a bit more I could even use gold and glow in the light color!
Would anybody be interested in them?
I’d greatly appreciate an answer after all making buttons at Conventions would mean I’d have to take it there and it’s super heavy!