I need something you will come back for
I accompanied my wife when she went to get a haircut. Reading a magazine, I found a hairstyle I liked for myself. I asked the receptionist if I could take the magazine next door to make a copy of the photo.
"Leave some ID, a driver's license or a credit card," she said.
"But my Wife is here getting a haircut," I explained.
"Yes," she replied. "But I need something you'll come back for."