I find that I often need to add CSS arrows to elements. To make the process quicker, I developed a SASS @mixin to provide two parameters: $location and $color. Boom, you've just been arrowed.
I updated the mixin to accept the arrow size as well, thanks to the suggestion of @ArturSzott on Twitter.
Also credit to @KasperAndersson on Github for the suggestion as well.
Need to know how to enable it? Go here.