The work documented in this report is an outgrowth of hands-on, educational science, technology, and art workshops I have run with and for children over the past two years. Blending low-cost, upcycled materials with emerging technology, these workshops encourage kids to tinker, invent, make messes, and explore. In schools, therapy centers, hacker spaces, and hospitals, I've learned about the developmental power of curious, happy hands. In these moments I've observed children "doodling" with technology just like we might with pencil and paper. In this report, I argue that this kind of doodling is a necessary form of practice for designers who work in an era of rapid technological change. The projects presented at the end of this report are my own technological doodles. They are investigative, playful, and rough around the edges. I consider this report, like the projects it describes, a thoughtful and imperfect beginning.