Keyless Lock Box
A wave of your finger opens this magic treasure chest.
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Piezo Speaker
Geiger Counter
This DIY Geiger counter clicks and flashes an LED each time it detects a radioactive particle. It works with most common Geiger–Müller tubes, and easily connects to radiation rate meters, data loggers, true random number generators, and the Radiation Network’s GeigerGraph software. Share your radiation readings with the whole world!
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Ice Tube Clock Kit
Build the most unique clock on the market, featuring a retro Russian display tube and a clear plastic case so you can appreciate the inner workings of this fantastic gadget!
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