Leatherman Squirt P4

Despite being the size of a key chain, the Squirt P4 features a myriad of tools.

This gentleman boater's tool is the size of a key chain but packs enough tools to tighten a hose clamp, snug down a hinge bolt or splice and crimp a loose wire connection. Also, on board the Squirt P4 is the tool to touch up a manicure (it includes scissors, file and tweezers), but we used its tools to snip the tag end of a fishing knot and touch up the point of our circle hook. It's stainless and resists corrosion. Pocket it or hang it on your keys. $35; llbean.com