Inventing something is traditionally read as creative problem-solving at work beneath the surface. Dream books see it as a sign of resourcefulness looking for its outlet.
Does the traditional reading fit your dream, or did it mean something else to you?
My Cosmic Code has a private dream journal. Write a dream down and the app picks out the symbols in it, shows what dream books say about them and, over time, which words recur across your entries. The journal is stored on your device only.