To add to the optional emoticons support in comments, you can also enable animated images, with the Giphy Gif Picker. Using images will make team collaboration more fun and a lot faster in many cases!
As with all Power-Ups, you first need to enable the add-on in board Settings. Then, open your task comments, and click the black icon to open a Giphy image search.
Type in what you’re looking for, and click on the chosen image. That will add the image’s information to the comment editing window. You can add text, emoticons, or attachments and post the comment.