Ikea's $10 Kallsup Bluetooth speaker is fun and colorful and sounds better than its price suggests. It's not mind-blowing (it is a $10 speaker, after all), and there are no features to speak of, other than the ability to connect up to 100 of them together, but at that price, I don't really care. They're a quick addition if I need a bit more color and sound on my desk or in my son's room.
The Kallsup is about as simple as a Bluetooth speaker can get. It's a 2.75-inch plastic cube enclosure with four short feet on the bottom and a single speaker inside, and it's available in pink, white, and yellow green. There are two buttons and a small LED …