I made Stinkies to explore how to make stickers for iMessage. It turned in cute animal masks. They're could be useful when hiding certain persons on pictures or just having fun in conversations.
Simple Stinkies landing page I made featured some of the masks, some links and a little animated guide explaining how to use these stickers.
Stinkies distribution is currently paused in the App Store, but one day I could bring it back. Meanwhile, you can use Stinkies for free in Telegram.