Feeling like doing some adventurous tracking? The WOWee ONE ($60 and up) is a small, gel-backed speaker that, when placed on an object with a flat surface—think table, cooler, truck bed—couples with the object, creating a resonance that adds low end to anything pumped through the teeny transducer. While the speaker is officially designed to “bring big sound” to speakers in laptops, phones, and other portable consumer devices, we think it would be a lot more fun to experiment with, say, re-amping your guitar tracks through your car.