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Old 04-26-2019, 09:52 PM
Monty's Avatar
Monty is offline
Straight Dope Science Advisory Board
Join Date: Feb 1999
Location: Beijing, China
Posts: 22,714
I thoroughly enjoyed two that have already been mentioned: Tinkertoy, and Lincoln Logs. I also have fond memories of the View-Master to see photos in 3D. My favorite set of photos for that were from the Civil War photographer, Brady. And, finally, the Lite-Brite which was pretty cool to see after following a text to place the bulbs, akin to the old typewriter picture puzzles.

Oddly enough, every one of those is still in production today.