Ipecac would be good. So would a laxative.

Since the TSA sees itself as a collector and disposer (supposedly ) of so-called hazardous materials, just clean out your garage and put the liquids into appropriate bottles.

If you have X, use bottle Y:

Paint thinner? Sprite.

Engine oil? Maple syrup.

Ammonia? Countrytime Lemonade.

Antifreeze? Mountain Dew.

Primer? Milk.

You could even put up a bit of a protest over the 'confiscation' to make the bottle even more attractive...