Superstar
Flasks don't get much more ingenious than the Bev Brush. This alcohol concealer is exactly what it sounds like: a hairbrush that hides alcohol. The flask is made by Binocktails and can hold up to six ounces of sweet, sweet booze.

The Bev Brush should be a breeze to get past security, more or less, thanks to its awesome design. The flask actually looks and functions like a hairbrush and features a mirror on the back. The opening for the flask is hidden in the handle, and the brush comes with a small funnel to make pouring easier. Lately, the market for custom and crazy flasks has been booming.

The Bev Brush caters to a group of drinkers who have long been ignored by custom flask companies, women. Ladies, you can now smuggle in your own swill in a multi-functional flask.