Keyboard.cool - emoji & symbol keyboard is a free keyboard app for Chrome. You can use it to insert symbols and emoji directly into text fields. All you need to do is install it and then search the keys you want to use. 

It's super fast, because it's an optimized version of a very popular search engine. You can search the emoji using the search box or through the keyboard, as well as the symbols you want to use. 

In the end, you'll get a list of symbols and emojis you can insert into text fields. The symbols you choose will show up with the option of either putting them into the message directly or copying them.