Hi Reid,
When I taught Kindergarten I found it very helpful to begin each class with a short story, sometimes 10 minutes, somehow connected with design or with self-control or creativity or whatever vibe I needed to create or revisit. We would go to a specific location and sit on the floor. Sometimes I would use a book, but the kids responded best when I was just telling them a story.
When we began some woodworking, for instance, I riffed a short Pinocchio, without telling them the name of the story until the very end. It helped set a calming tone, added some creative visualization, and allowed me to get a pulse of the class - who was bouncy, who was tired, who was deep into the story, etc. Some stories to consider: The Honest Woodcutter, Big Orange Splot, Three Billy Goats Gruff, Three Little Pigs, ... basically something with a moral that maybe also has something they can build.
As far as content, I wanted to build their skills with material management early, so I did a lot of craft-stick & Elmer's constructions, so that they could get good with how much glue you need for connections, for example. We built features of the stories we told (bridges and trolls, houses...), we built boxes with lids, picture frames, marble mazes, ... I can share more with you or we can brainstorm ideas.
I miss that age - you'll have a blast with them!
Rob