Anker SoundBud Surge | $18 | Amazon | Promo code SDCORE36
Photo: Amazon

For just $19 today, you can grab Anker’s SoundBuds Surge lightweight Bluetooth headphones, a close relative of the SoundBuds Slim, which won our affordable Bluetooth headphone Co-Op. With magnetic connectors on the earpieces and a water-resistant coating, these would be a great addition to your gym bag or suitcase, even if you already have another set of earbuds.