As of today, I have reached my first year of (English) Wikipedia contributions under the identity isilanes. I have accumulated over 2100 edits in that time, and created over ten new pages, not counting dozens of pictures of chemical structures I have made for chemistry articles.
Other contributions could be the logo of my University (UPV/EHU), that appears at its wikipedia page, many vandalism warnings to misbehaving users and disambiguation of links.