I brought the coupon to the bagel counter and asked the bagel man to give the coupon to the next customer ordering bagels. To my surprise, he got really excited! I think he said something like "That is great! I will tell the next person that a nice lady left this coupon. Wait, do you want to wait here a minute? You can watch me give it to the next person." I was excited that he was excited, so I asked him if I could take his picture with the coupon.
I told him that I didn't want to wait because I didn't want the recipient to know it came from me. He promised he would help me carry out my act of kindness, and I trust that he did. :)