During 1998 I brought a Nerf foam brain in a large plastic jar complete with wooden balls painted like eyes on a flight to Florida for the Disney FIRST competition.
Of course that couldn't be put in carry on, so I brought it with me. If you think you attract the attention of airline security today, see what they do when they look up on the screen and see a brain in a jar going through the x-ray machine.
Then, just to cap that off, nothing suspicious here...I just happen to have no less then 150Lbs of tools in trunk in my luggage.
Good times...
After I had to make good on a promise to the students I strapped the brain/ball to my hat with zip ties and asked the Epcot employees if they had seen my mind because I seem to have lost it (some have argued I never found it).