Within the first half-hour:
A woman came up to the desk to ask for scratch paper. I started to point out that around the other side of the desk (about 20 feet away) there is a bin with scatch paper and pens, but she said it was empty, so I fished around in the drawer and ended up ripping out some pages of a donated notebook for her (there is no such things as a scratch paper budget). As soon as she left I went over to refill the 'empty' bin--and it had about 20 sheets in it!
This was balanced out later by one of my favorite tween patrons coming up and asking if we had any headphones to give out. We don't have a budget for headphones either, but if someone gets a free airline pair or something we stash them in a drawer and give them out to desperate kids like them. I was excited to report that, even though we only have them once in a blue moon, we had them today, and a waaaay nicer pair than usual. I commented on this as I handed them to him and he pumped his fists and whisper-shouted "Yesss!"