You take a cardboard box 30" h x 20" w & d
cut the bottom off.
tape the top up like your are sending it. then cut around the top on 3 sides about 1 inch down from the top; a big flapp door on top.
line the whole inside, every inch with HEAVY duty foil, using aluminum duct tape to attach it. do not use regular duck tape like the kind you fixed the toaster with.
about halfway up run 2 pieces of conduit through and put a rack on them. this is where you set the turkey
at the bottom you put an old roasting pan with some holes in the sides for air flow full of charcoal. then some bricks around that to set the box on for more air flow.
Now the ol' ECB doesn't look so bad, does it?