remember that super party cooler? could have done the same with a standard cooler and a backpack of supplies. that thing ganked millions
Ah yes, the Coolest Cooler:
https://www.kickstarter.com/projects/ryangrepper/coolest-cooler-21st-century-cooler-thats-actually
They asked for $50k and got
13 million dollars. They currently sell for $400 a pop via their website:
https://coolest.com/product/coolest-cooler/
Sure you could DIY, but the beauty of it is having everything integrated. It has the cooler, rolling wheels, battery system, LED light, bottle opener, Bluetooth speakers, blender, etc...that's a lot of crap to carry around with you, vs. having everything built into a single unit. Downside is the price. I just got a couple rotomolded RTIC coolers (Yeti knockoffs) for just over $99 a pop & they are super awesome for holding ice compared to a standard cooler (although no spiffy features! lol).