As long as you don't need your speaker to be particularly smart, you probably can't do better than the portable waterproof JBL Flip 5 at Verizon right now in terms of value for money.
JBL Flip 5: Portable Wireless Bluetooth Speaker, IPX7
JBL FLIP 5 Waterproof Portable Bluetooth Speaker - Red
JBL FLIP 5, Waterproof Portable Bluetooth Speaker
JBL Flip 5 Bluetooth Speaker, 5 Colors & Waterproof
JBL FLIP 5, Waterproof Portable Bluetooth Speaker
JBL Flip 5 Waterproof Portable Wireless Bluetooth
JBL FLIP 5, Waterproof Portable Bluetooth Speaker
JBL Flip 5: Portable Wireless Bluetooth Speaker, IPX7
JBL FLIP 5, Waterproof Portable Bluetooth Speaker
JBL speakers
JBL's Flip 5 Speaker Returns to All-Time Low Price of $70 - CNET
The stories behind smartphone brand names: Apple, Samsung, Google
JBL FLIP 5, Waterproof Portable Bluetooth Speaker, Red
Adrian Diaconescu - PhoneArena - PhoneArena
Adrian Diaconescu - PhoneArena - PhoneArena