The annual Tadaa! list is a posting I write listing the things that gave me a feeling of accomplishment that year. I started it in 2010, and made one every year since. The primary reason for these lists is that I easily forget things I did in a year, because I tend to move on to other things before letting something register or sink in properly. For instance one year I forgot I organised, hosted and moderated what turned out as national level conference with a colleague, because I left for an extended international work trip the day after. That made organising a conference, originally meant as a project retrospective, a thing I had to finish before I could go to the airport. The lists over the years helped me resurface things that are worth looking back on. They are unordered lists, often roughly chronological as I leaf through my calendar and notes to write them.
Here is the full list, most recent at the top.

2021
2020
2019
2018
2017,
2016,
2015,
2014,
2013,
2012,
2011
2010