Unicode pictograms to mark progressively rising values:
https://www.draketo.de/anderes/unicode-icon-progressions
For Ace Maths I searched for unicode icons to mark progression: show that you’re getting better. Since I found a lot of different options (from simple sparklines to a huge list of animals), I’m collecting them in this article.
Includes a tip for somewhat better, automatic #unicode "image" suppport #LaTeX with plain #pdflatex / #pdftex