I just watched a video about Ikea - wow, was it interesting! Anyway, the person who has to put the foam and padding inside the stitched cushions wraps a piece of plastic under and up over the back edge of the filling far enough to be able to grab it. The plastic allows her to easily slide the inserts into the cover and then she simply pulls it out for use on the next one! Sure wish I knew that one when I made my baby blocks!!! Now, if only I can remember it for the next time....