2 books · Ages 5–8 · Chapter Books
Pebble Plus: How to Make a... is a 2-book series for ages 5–8 by Barbara Alpert. Each book stands alone — start anywhere.
Start anywhere — each book stands alone.
That said, How to Make a Wind Speed Meter and How to Make a Pom-Pom Flyer are great first picks.
No particular order needed — browse and pick what catches your eye.