balloon
inflatable flexible bag filled with gas
thundersticks
Noise makers
whipping bladder
tool used in harmless whipping rituals
gas balloon
balloon filled with gas less dense than air
ballonet
air bag inside the outer envelope of an airship which, when inflated, reduces the volume available for the lifting gas, making it more dense; inflating the ballonet reduces the overall lift, while deflating it increases lift
toy balloon
small balloon used as a children's toy