Amano Chocolate suggests garden mulch: "Today, cocoa bean husk is sold or even given away as garden mulch. For this, the husk is highly sought after. The husk is full of nutrients and has high concentrations of nitrogen, potassium, and phosphorousall important plant nutrients. Its strong fibers help to break up the soil, and thus it is particularly useful in soils with lots of clay. When used to cover the soil, it helps to keep the moisture in and makes a beautiful ground cover. The best part, of course, is that it makes gardens smell of chocolate. What could be better than that?"
Others are using it to create tea.