Colorforms Brush with Genius: Made a Drawdio but still want more? This fully-assembled kit contains Drawdio innards as part of a big plastic brush so it acts like a half-theramin/half-paintbrush. When painting, the conductivity of the watercolors changes the sound pitch that comes out of the little speaker in the brush.
Can be used on most surfaces with just water—no paints required!
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