Sebastian created Widerstand ist Zwecklos, an ohmmeter lamp that displays resistor color codes. He writes:
“Widerstand ist zwecklos” is german for “resistance is futile”, but also “resistor is useless”, which is absolutely the point in this project. i teamed up with my dear friend jan and we created a device that measures resistance and displays it as a resistor color code. an optional cheat mode also displays the resistance as a decimal number. needless to say it is shaped like a giant resistor.
More build photos and details in his blog post.