Bike Tree is an efficient solution to the chain-it-up parking approach favored by so many cities around thw world. Rather than locking your bike to a post at street level and crossing your fingers that it’ll be there when you return, simply swipe a smart card, enter your PIN, and your cycle is taken up the “trunk” of the tree to a dome that protects it from thieves and the elements. And the best part, it’s solar powered! Thanks to Tree Hugger for the tip.

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The glow brick is a light bulb set in a clear solid brick. Sit the bulb near sunlight and it’ll soak up whatever power it needs to make a suitable night light once nighttime sets in. Thanks Engadget!