Maybe I am missing something here because I don't have mine yet in front of me to see how it works but... wouldn't it just be easier to attach to the bottoms of each corner some of the foam you get electronics products packed in? I am talking the stiffer plastic type foam not the spongy stuff. The foam is extremely light and I can't imagine four decent size pieces of it weighing more than a few grams. It's great at absorbing shock (considering that is what it is made for) and it's free.