Loved your tute, when I was a little girl my mom belonged to our schools PTA and they use to make pincushions using empty tuna cans, covered with cloth and they used foam for the cushion part, I remember her sitting and making these at the dinning room table to take to the sales. They put all kinds of decorations on them. This brought back memories.
I like yours because of the magnet, very clever. I will have to try one, thanks.