The Forces of Flight game would make a fun addition to a pack meeting for the Soaring the Skies Cub Scout theme. Use this game when the Cub Scouts have been sitting for too long and need to get up and move around.
Engineer Activity Badge
My boys loved this book! It shows them how to make miniature catapults, bows, and other projectile machines out of common office supplies. This book would make a great basis for a open house or a just for a fun meeting.
In an egg drop challenge, Scouts try to design a container which can prevent an egg from breaking when dropped. This is an excellent project to get kids interested in science and engineering.
A reader asks about helping an auditory learner with the Webelos requirements. Songs can be a big help to auditory learners.