I wish I had one! I had the idea after Ethan put his hand into the pocket part and said ''look, a bunny!".
Basically, I folded the wings in towards the fleece and then upwards so they were pointing up out of the back of the nappy. Then I sewed buttons to the front fluffy side for eyes, etc... I was very proud of it, but it was a bugger to push a sewing needle through!