This would be an awesoem idead for your restaurant's anniversary. Get your regulars to do this and seal it for 5 years like a time capsule. Ask them to discuss favorite server, dish, decor, weather. marketing (great local news story in 5 years too).
Personalized Wood Wedding Puzzle Guest Book & Keepsake Box
Guest Book Alternative Idea - Set a wooden wedding puzzle on the reception receiving table. Guests sign a jigsaw puzzle piece or pieces as they enter the reception hall and mingle for a fun, unique and interactive wedding signature keepsake that can be displayed in the bride and groom's home. This personalized wood wedding puzzle guest book with keepsake puzzle box can be ordered at https://myweddingreceptionideas.com/guest-book-puzzle-wood-personalized.asp
23 Unique Wedding Guest Book Ideas for Your Big Day
Customized wooden tree puzzle with your initials. A unique wedding or event guest book alternative, by Bella Puzzles.
50-300 piece Puzzle Guest Book Wedding Guest Book Large Letter Alternative Guest Book Hearts GuestBook Unique Guestbook Wedding Book Heart by EngravedWeddings on Etsy https://www.etsy.com/listing/531794898/50-300-piece-puzzle-guest-book-wedding