An Anchor is a necessity for boating — a boat without one is nothin' but driftwood.

An Anchor is an inverse-kite

A Flashlight is a sun stick

The Flashlight is a device that should be required to have a glow-in-the-dark band around it so it can be located in the dark.

A Flashlight is technically a ray gun.

A Flashlight is actually just a 1-bit computer.

A Key is a very specialized lockpick.

A Key is just a metal password.

The Key is an object with a special knack for tricking you into thinking it does not belong to the right lock.

A Ladder is a vertical bridge.

A Ladder is stairs on hard mode

A Ladder is a portable stair skeleton.

A Ladder is a bridge going upward.