If you’re hosting a small get-together or hangout at the park, a small speaker like the UE Wonderboom 4 can provide the soundtrack. It’s the kind of gadget that fades into the background yet remains as important as the food and drink. And right now, it’s down to just $59.99 ($40 off) at Amazon, Best Buy, and B&H Photo, which is its lowest price to date.
The Wonderboom 4’s compact design — which is roughly the size of a softball — makes it easy to bring anywhere, whether you’re…