I think there might still be threads with this info in them... somewhere on site, social or tech forums. But you can use any from any site that allows linking to them, not copyrighted, patented and restricted.

Right click on the emoticon, and save as...

sometimes you can right click and then "copy"

it depends upon the site.

To see if it works, PREVIEW REPLY (at bottom of post) to view it. If all else fails, you have up to an hour to delete (or edit) any post. Good wishes!