Zippy's Big Adventure and The Gap and the Map and also The Cap and the Map (this last one has the simplest language).

These are both Gemini Storybooks for the CVC -ap Word Family.

Both of these books were created using the same prompt: "create a story book for new readers based on these words: gap, rap, tap, lap, sap, nap, yap, map, cap, zap"

The Gemini chats which created these storybooks can be viewed here, here and here.