A post that shares something that uses code.
As academics we dive deep into niche things and share our findings in peer-reviewed papers. We also learn a lot of tricks, tools, and techniques that help us conduct our research. These we often share through personal communications with colleagues or mentees.
Why not write short blog (you don't have to call it a blog) posts sharing this knowledge with anyone that comes upon your website.
A post that shares something that uses code.