"Before you go Thomas, I have some mail that needs to be taken to the post office. Can you help me?"

"Of course," says Thomas, "I will take it in my truck. Nikita, can you pull on the mail rope to get the mail from Harold?"

Nikita pulls the rope and down falls all the mail. "Look!" says Thomas, "there seems to be more than just the mail in Harold's load. This must be another of the missing party things. It looks like there are three packets of chips for each party-goer to put in their bag."