Whether you're hosting a small get-together or a full-blown party, one of the most important hosting necessities is music. A great playlist can make or break a party, but the only thing worse than bad music is no music at all. Enter the Ultimate Ears Wonderboom Portable Waterproof Bluetooth Speaker ($100).
This tiny device can go anywhere with you, and the sound quality is amazing, so you're never without your favorite tunes. It also comes in six colors, so you can choose from sleek black or fun lilac, whatever you're in the mood for. The case is waterproof, so take it to the pool without any concerns, and the barrel design allows for 360-degree sound. Portable speakers are the Summer essential you won't be able to live without, and this bestseller is our top pick.