I've moved from the couche sitting on the peel on top of a 2 x 8 over the bathtub with hot water, to the couche on a serving tray inside a large plactic bag.  After visiting a bakery and seeing their stand of trays covered in a zippered plastic bag I've been thinking.  I saved some zippered plastic bags from the department store when I bought some sheets.  One of them is almost the exact size of my baking stone.  No sense proofing more than I can bake. 

Materials:

1 14" x 17" piece of scrap plywood -small hole drilled in each corner

1 zippered plastic bag that a sheet set came in

2 coat hangers, trimmed and rebent

1 small piece of duck tape

open proofing box

closed proofing box

:-Paul