Amazon.com: Hidden Passage: 3D Wooden Brain Teaser Puzzle by SiamMandalay with SM Gift Box STEM Skill Builder Interlocking Game. Educational Problem Solving Game for Adults. Handmade Desk Accent for Offices : Toys
six classic metal puzzles solution 3D brain teasers
VolksRose 3D Wooden Cube Brain Teaser Puzzle 9 pcs, IQ Puzzles Great Educational Intelligence Jigsaw Puzzles Toys for Adult Children - Challenge Your Logical Thinking - Small Size #6 : Toys & Games
Amazon.com: Mini Wood Brain Teaser Set of Four-Classic Designed Light Wood Stain - Wooden Brainteaser Puzzles & Fun Gifts : Toys & Games