As cheaper novelty handcuffs may be damaged by this process.

Source: Ningbo Heng Yuan Wang Plastic Co., Ltd.  author:   Time: 2013-05-17

A pair of standard handcuffs make a good bottle opener, and often a simultaneous conversation-starter. Push the single strand (swinging part) of the handcuff through the ratchet, and hold it so that there is a gap of about 3/4" between the double strand and single strand. Rest the single strand against the top of the cap. and hook the bottom of the double strand under the cap. Use the handcuffs to lever the cap off.

Company resources：bottle opener, coin holder
lottery scratcher, key chain
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