I've been using the Font Awesome icon glyphs to great effect to differentiate list items as shown in the linked image.
This has made it really user friendly for my clients to view a list I've shared with them and see the status of items, identify questions I have for them, and indicate when they've answered them in the list. I love it, and it's impressed clients.
I'd like be able to include more than one icon on an item to expand on this (admittadly) improvised functionality, so I can indicate with just a single list item something that requires, for example, additional research for me, is also a question for my client to answer, and needs to be added to my UX wireframe.
I suspect it would involve more than just some additional CSS witchcraft, as the icons' inclusions are driven by the tagging model. How to handle it is outside my expertise, but I won't let that keep me from making a suggestions :-)
If tags are presented on the front end as classed HTML elements, I would think it would be possible to use a script to parse whether multiple icon tags exist on an item, what order they are in, and what correlating icon should be added to the generated HTML.
A solution to this would be a CSS like this:
Thus each tag is converted to the icon with such a tag.
Would it work for you?