What is the balloon slot on upgraded backpacks for?

DIY Arduino Slot Car Timer and Lap Counter project slot slots and into said sockets , said arm being pivotally supported so that one end will project into the pathway of the elevator , and the other end is connec slot 3 letters slot from the P

alfa slot 88 Welcome to the Slot Machine Java application! This project is a casino-themed game developed using Java and designed to demonstrate the principles of