"Ketchup packets" refers to small, single-serving containers filled with ketchup that are commonly provided at restaurants or fast food chains. Full definition
For example: the smart snack nutritional requirements prevent a student from buying an additional ketchup packet with their meal. (thelunchtray.com)
You start out with all the excitement while planning but somewhere in between the 10th bathroom break and flying ketchup packets, you realize that something went wrong with your family vacation. (preschoolplaybook.com)
In their place, our tester featured a recessed, rubber - lined storage area with space for two full handfuls of ketchup packets. (cnet.com)