The CS Unplugged site (https://csunplugged.org/en/) offers a collection of free teaching material that teaches Computer Science through engaging games and puzzles that use cards, string, crayons and lots of running around. In the “At home – Activities” section you will find a selection of how to do a few puzzles or magic tricks with kids that will engage them in deep computational thinking. The site is ramping up to provide more such activities so keep returning.
The site is generally aimed at teachers with activities to do in the classroom so you will find robust lesson plan instructions in the “For Educators – Topics” section. Check it out and teach your own children.
