The foolproof way is to buy a starter pistol and real lock and declare a firearm when you check your luggage.
This guy's pretty funny...especially while he's wearing the dreaded blue gloves. I think for the most part his overall idea is good.
Mike Adams of Natural News has posted a video of an ingenious method to prevent the TSA from stealing your valuables. While I think it’s a great, inexpensive, and effective technique, there’s still the problem of the TSA separating you from your bag and someone else potentially walking off with it. Since all your stuff is locked together inside, you’d be losing not just some of your expensive equipment but all of it. There’s also the problem of retaliation. But nothing’s foolproof. The mere fact that we even have to be scheming like this to protect ourselves from the people whose salaries we pay says it all.
The 100% foolproof way to stop TSA from stealing your stuff is to not use any transporation service where TSA is present. Put the airlines out of business and see how long TSA is around. This is truly the quickest way to fixing the problem.
That's the fun part. Starter pistols are legal in New York because they're not considered firearms. But the FAA does, and puts them under the same rules as real guns.