What about a volcano grill. You can set it on a picnic, or other table. You can stack it several grills high, a grown man can stand on it.
When you don't want to use it for Dutch oven cooking, you can use it for a grill or even other style oven cooking, by adding the cover. It is tri fuel, so you have options. You don't use as much charcoal and with the cover you can sometimes use no top charcoal or even go without the Dutch oven lid, all together.