This hammer flask is a multifunctional tool that does a lot more than just transport alcohol discreetly. The clever flask is also functional as a hammer, making it a somewhat responsible purchase even if not used as a covert flask.
While the hammer flask is hopefully just a novelty gift for the handy-inclined, this flask is presumably for construction workers, who will hopefully not use it while on the job. The hammer flask is also a bottle opener, ice crusher and hammer.
The hammer flask is a hilarious gift from mom or dad ahead of Mother and Father's day, while it would also make a great housewarming present for anyone trying to assemble a collection of tools for their new place.