Forget pulling a wagon filled with kids. If you really want to enjoy a day at the beach you'll hit the sand with this speaker-packed wagon in tow. A pair of 12-volt batteries power the Blastmaster XL's 2,000 watt sound system for up to 40 hours of non-stop partying, and yes, it comes with cup holders.
Including the subwoofer the wagon comes equipped with a total of eleven speakers. And like any respectable portable sound system these days it includes Bluetooth capabilities in addition to a CD player(!), an AM/FM radio, a USB port, and a line-in connection for blasting audio from any source. At $4,000 it's ridiculously expensive, but did we mention it even includes a bottle opener? Sold! [Hammacher Schlemmer]