For the gentleman who refuses to let a loose thread or an un-popped bottle cap disrupt his day, the Leatherman Micra (£55) is the ultimate micro-sidekick. Weighing a mere 50 grams and measuring just over two inches when closed, this stainless steel wonder squeezes 10 essential tools onto your keyring—including spring-action scissors, a razor-sharp blade, tweezers, and three distinct screwdrivers. It is smaller than your car key fob, yet capable of fixing minor domestic crises with effortless swagger. Attach it to your keys and prepare to be the hero of every impromptu picnic and stubborn packaging emergency.

Leatherman – £55