Now this would make a very cool geocache: The Codex Silenda. It's a wooden book where access to each page is protected by a mechanical puzzle. People must solve the puzzle that precedes each page by maneuvering gears and bolts before they can continue, and the mechanical encryption grows progressively more complex as you advance through the book. Could you imagine this as a puzzle cache with the log sheet on the final page? (pics stitched together by I.B. Geocaching Supplies) #IBGCp
Hidden Winter by Lizzie Thomas. Inspired by experiencing how the Japanese celebrate the seasons, the ‘Hidden Season’ series are wooden books holding hand cut paper pop up scenes inside. Having caught the transient, each season is waiting to burst out at any time of the year.