geometry puzzle. first day in cooperative base groups?
<3 this beautiful, artful, coloful and supple wood puzzle from howard fink and love that it is self-contained
How To Make a Cryptex...because you never know when you might need it
What are any puzzle ideas for real escape rooms? - Quora
printable puzzles for adults
Naef Cubicus Wooden Puzzle.
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escape room puzzles - Google Search
This ingenious old puzzle will test your logic and attention to detail
The Handcuffs Puzzle. Delightful. Got everybody interested, suitable for all ages. No cleanup!