2. ECOXGEAR

Ecopebble lite • $40 ecoxgear.com

Big tunes come in a tiny package. The Ecopebble Lite Bluetooth speaker is only 3 inches square by 1.5 inches deep and weighs just 3.2 ounces. Secure the attached bungee in the cockpit while out for a sail or clip it to your backpack while on a hike, and take your music anywhere. The speaker is waterproof to 3 feet and has a seven-hour battery life.