I was trying to figure out a way to add Stir Fry to my outdoor cooking and ran across a site called Ceramic Grill Store.
They make something called a "Spider" that sits inside the Big Green Egg (BGE) and allows a wok to fit inside it.
I ordered their 3 leg Spider (which was the wrong one for my grill (my fault, but it worked okay) and a 16 inch carbon steel wok. The two together were $60 with shipping.
When I got the wok, the weather was horrible, but I finally got a chance to use it today. I seasoned the wok on my gas grill, which took about 35 minutes, then I moved the wok over to the BGE for cooking.
I really like the idea of stir frying outdoors, since that is my favorite place to cook. Even the wrong spider didn't make much difference, but I will probably order the 5 pronged Spider when I get a chance. The beef and veggies turned out great and I would recommend the spider/wok combo for anyone with a BGE.