Realistic Looking Rock to Hide a Spare Key

Realistic Rock Key Stash
This useful novelty stash rock will help ensure you never accidentally lock yourself outside your home. Locksmiths are expensive! And everyone already knows about the hide-a-spare-key under your doormat thing – not a good idea. But an inconspicuous rock laying around somewhere outside? Much better.

You may also want to dirty it up a bit with soil to enhance the realistic look. Available at Amazon