After the fateful Flight 93 — “Let’s roll!” — the greatest security system on any flight is now the passengers themselves.
Never again will passengers passively submit to a troublemaker’s demands. Not with the risk of complete destruction now facing them.
From now on, whenever a drunk, hooligan, terrorist or garden-variety nutjob tries to disrupt a flight, there will be a militia response from the rest of the passengers. If the airlines want to help, please make sure there is a roll of duct tape on board. The passengers will take it from there.
Even better
https://en.wikipedia.org/wiki/Millwall_brick
Weapon of English football hooligans
Made from newspapers/magazines folded and rolled into a
baton
Just ask the shoe bomber and the underwear bomber.