> Can we make a balloon for Tsa that is harmless and will cost too much to fight and demonstrates the pointlessness of Tsa?

You don't need a balloon. A real gun will do.

https://abcnews.com/US/tsa-fails-tests-latest-undercover-ope...

"The news of the failure comes two years after ABC News reported that secret teams from the DHS found that the TSA failed 95 percent of the time to stop inspectors from smuggling weapons or explosive materials through screening."