On the weekend my ever-inventive wife tweaked the pattern a little by using her sewing machine to modify and stitch a $3 K-Mart sunshade, and turn it into a pot cosy. We used the existing trim for the top of the main chamber (for neatness of finish). And we used gaffer tape rather than duct tape, just for its greater stickiness. Will let you know if it doesn't work as well

cheers
Peter