We got something like that years ago. It was Disney magic:
We were in Hollywood Studios just about the time Fantasmic was starting, so the crowds were thinning out. My husband and older daughter were riding Rock-and-Roll Roller Coaster over and over: they were exiting the ride, running back to the entrance and riding again. They rode 5-6 times.
I was sitting on a low stone fence with my younger, too-short-to-ride daughter, who was crying and kicking the fence because she wanted to ride too.
A cast member saw her, asked what was wrong, and he said his friend Tinkerbelle might be able to help. He disappeared for a moment and returned with a fancy certificate "from Tinkerbelle" with her name on it. The certificate said that when she was tall enough she AND ONE OTHER PERSON could cut to the front of the line for Rock-and-Roll Roller Coaster. He also gave us a pass to be seated in a special section of Fantasmic.
We hadn't planned to attend Fantasmic, but the pass changed our mind. The cast member at the gate took our pass and said, "I'll get you there!" He zoomed us through the crowds in a way we couldn't have done ourselves and found us great seats. (Off-topic: Fantasmic is awesome.)
It worked: she stopped crying and was so proud to have the certificate (back at home she had me frame it), and she was so proud that she "got us those seats". She talked and talked about it, completely ignoring the fact that she "got us those seats" by throwing a major trantrum and kicking a stone fence.
Several years later, we did use the certificate for Rock-and-Roll Roller Coaster. They let the whole family go to the front of the line -- they didn't have to do that, and we were prepared to watch the two kids ride while we parents were denied /told to hit the end of the line.
Full disclosure: I had a color copy of the certificate made /took that to the parks because my daughter was loathe to part with it. They did not take the certificate, so presumably we could keep using it ... forever, maybe? I am 100% sure my daughter still has that thing squirreled away somewhere.