I recently purchased the sos solar oven solarovens.org
...at the prompting of my wife! It is a very easy to use oven and makes great roast chicken and veggies. I grow all of our chicken and most if not all of our veggies. this past weekend I made beans and rice...the beans were so hot I burnt my mouth while tasting.
For the chicken I just put in a bed of diced onions and garlic, put the chicken in with some rosemary and salt and pepper. Put it out at 9am and its ready by 5pm. The juiciest moist and most excellent chicken you've ever had!