Gender specific key holes for him and her.

If you and a partner keep mixing up your keys, the His and Hers Key Holders will give you a funny and irreverent way of preventing future mix-ups. Each set of comes with 2 holders, each one featuring an outline of the respective gender as its design. Since there are no hooks involved, the keys won’t be prone to accidental bumps and falls, and the holders themselves are sturdy yet easy to install, only requiring one screw each.

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Buy on www.amazon.com
$25 - $75