The Great Big Book of Really Hard Puzzles: 256 Pages – Paperback – Very Good o

Grab this activity book if you need something engaging and screen-free.

The Great Big Book of Really Hard Puzzles: 256 Pages – Paperback – Very Good o

A nice touch is the illustrated signature from the artist on the title page.

The Great Big Book of Really Hard Puzzles: 256 Pages of Mind-Twisting Mazes,…

This activity book includes a code-breaking section for secret messages.