A trampoline has a trampoline bed with a bounding surface, and a trampoline bed bounding surface. A trampoline frame holds the bounding surface substantially horizontally to provide an area for a user. A balloon coupler is attached to the trampoline. A bounce module is mounted underneath the trampoline bed bounding surface. The bounce module is placed to receive motion from a user. The user activates a mode of the bounce module during jumping. A conduit hose is attached to the balloon coupler. A one-way valve is configured to regulate flow only to the balloon, and blocking any flow away from the balloon. A pump may pump water or air to the balloon. A balloon is attached to the balloon coupler so that the balloon is in fluid communication with the conduit hose.