How do you reinforce the stopper on your water gun?

To reinforce the stopper on your water gun, you can use waterproof adhesive or silicone sealant around the edges to create a tighter seal. Additionally, applying a piece of strong tape, such as Duct Tape, can help secure the stopper in place. If the stopper is removable, consider replacing it with a sturdier, more durable one that fits snugly. Always ensure the area is clean and dry before applying any reinforcement materials for the best adhesion.