A Top Hat | $10 | Amazon
JBL Charge 4 Waterproof Speaker | $110 | Amazon
Pick up a JBL Charge 4 waterproof Bluetooth speaker for $40 off, and also save two bucks on this fancy top hat at Amazon right now, so you can show your friends and neighbors just how classy you are. The speaker, with its 7,500mAH battery, will run for 20 hours on a charge, and can connect to up to 2 smartphones or tablets to take turns playing music. Using JBL Connect+, you can combine up to 100 JBL Bluetooth speakers to make an insanity party in your backyard. It’s also IPX7 waterproof, so you can literally drop it in the water so the fish can party, too. We are unsure what the battery life or waterproof rating of the top hat is, however, as it is not provided in the product page copy.