The best suggestion so far: A letter from your shrink stating you must be able to play with the silly putty or you'll go nuts.
The funny (?) thing is, I bet that some security goober head would only let you on the plane with that kind of letter.
On my last trip, I got pulled over and the bags were ripped through - the guy finally pulled out what he was looking for, smiled and then said to the X-ray dude, it's only a tea ball. (tea ball - holds the loose tea to make a cup)
Then he looked at me, It is only a tea ball isn't it?
I assurred him it was.
What a hoot.
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TANSTAAFL - but if you work it right, FF miles comes pretty close.