Hibachi grills are pretty much simplicity defined -- a base, a (usually) cast iron cooking surface, and some means of adjusting the grates. Not much to them, but they are easy to transport, simple to cook upon, and a breeze to clean.
This grill is a good example of the classic style -- the Hibachi Cast Iron Charcoal Grill; the twin grills, totaling some 157 square inches of cooking area, may be individually adjusted to one of the 3 cooking heights to provide you maximum control of the grilling process. The curved sides of the grates help to keep the foods securely in place and you have more than enough room to plop nearly a dozen burgers or dogs, or a half dozen chicken breasts, on the hibachi grill. The wooden handles on the grates keep your hands mitt-free.
For a bare-bones hibachi grill, consider this Iron Sportsman's Hibachi. It's a heavy-duty model, at some 34 pounds of cast iron, but it features a generous 155 square inches of cooking space, regulates the cooking temperature via a simple draft door, and makes access to the charcoal -- and then the ashes -- through an opening on the side of the base.
If you've a need for an all-in-one travel hibachi, this Son of Hibachi Grill Combo may be in your future. The folding grill sports 170 inches of grilling space and uses a unique chimney drafting system to offer a rapid start of the charcoal. At the end of your cooking fun, you need not wait for the grill to cool to bundle it up for the trip home; you simply stick it in the heavy-duty Snuff Out Pouch and hat up. Clever.
Hibachi grills -- for a no-frills way to get your grilling done, there's nothing better.