Children's inventions go far beyond track housing or Ethan Allen furniture; they foreshadow the most innovative ideas in building forms and interior designs. Children improvise with containers and find places in a home that suggest enticing dwellings. A drawer left open becomes a balcony, soap trays become cots, and the space between twin beds becomes a domed playhouse through the strategic use of sheets and pillows. Children's playhouse activities are an inspired foundation for art-room architecture and interior design practice. For young artists, playhouses are a game board to practice design, a showcase for ideas, or even a place in which to hide or find adventure. Playhouses help children contemplate how to improve upon a world defined by adults. Future architects and designers meet and rehearse in playhouses, where kids groom their love for living in beautiful places, collecting furniture and accessories, and for appreciating architectural details. In a playhouse, children can take charge of, and fine-tune, the visual world. They form life-long artistic tastes in arranging fabrics, colors, and objects, and will carry the skills to visualize ideas in scale models, to arrange things in 3-D settings, to solve construction and environmental problems. Playhouses are as important as play blocks in building-design skills and artistic understandings.