Need ideas for a friendly bet punishment?

Hi, my friend and I had a bet that we were agreed upon loser had to do embarrassing stuff as the winner wishes for 15 minutes!
She lost and now I'm considering ideas for punishment. We are best friends but love to mess up with each other. I know that she hates being seen barefoot by others and I want to use this. So I want to have her in a crowded place, get her shoes and socks removed and somehow get people's attention to her exposed bare feet.
Do you have any ideas where/how can I do this for her as harmless and embarrassing as possible:)
Need ideas for a friendly bet punishment?
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