Geoffrey Siu | Enamel Pins on Instagram: "I love sticker books because I am able to peel, stick and reuse stickers in my collection. But what if I want to display them on my wall? I had this idea of using a nonstick baking mat as a reusable sticker display, but I didn’t know how I would mount it to the wall. Then I found magnetic poster displays! The nonstick silicone mats serve as a replacement for a sticker book page, and a perfect alternative for those who have extra large stickers, and…