We're learning that natural materials can insulate a cooler just as well as Styrofoam can, but without the ecological problems. The soft-sided Nutshell Cooler we looked at uses coconut husks. For those who prefer a rigid cooler, the Wooly Cooler might be up your alley. It uses sheep's wool as the insulator, which the developers say will keep ice for three days.
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The lid hinge design is interesting, and the internal trays that keep things inside off of the ice is a nice touch.
I'm not sure about using the top surface as a cutting board, as a cooler is something that usually does double duty as a bench.
You'll also note they added a threaded spigot to the drain hole, so you can attach it to a garden hose; I can't envision the situation that would require that, but the fact that they've added the feature indicates the designer(s) have run into that situation.
Now they're back with a new Kickstarter with a lower funding goal of $15,000; at press time they had $33,000 in pledges, with 15 days left in the campaign. Congratulations to the developers for persevering!