One thing every photographer should have, and should update regularly is a portfolio. A collection of the very best of their photos.
I keep two portfolios, and extended one and a condensed one.
You can see the extended one here. It groups my work into the different categories I work in, and showcases the best examples in each category.
The condensed portfolio is shown below. I keep it limited to 12 photos, even though I have more I’d like to include, because I want to force myself to make the critical assessments, and keep my standards high.