Emoji Keyboard
Just arrived on the scene, the Emoji keyboard!
This keyboard were selling at
http://emojiworks.co/
, but the site's dead as of 2018-05-23.
Emoji Keyboard Stickers
You can buy the stickers emoji keyboard
How to Input Emoji
On the Mac, you can set your keyboard to type emoticon. See:
macOS: Create Custom Keyboard Layout
For Microsoft Windows or Linux, you can just copy and paste. See: