Features nobody asked for
An inventory of things that somehow made it into a portfolio.
A lock screen for a website. A draggable desktop. A Recycle Bin with feelings. A fake computer with real settings. A terminal that exists mostly because it would be weird not to have one.
None of these features were required to show a portfolio. I still wanted to build them, so I did. The important part is that they don't get in the way of the actual work.
Rule for the next pointless feature: make it fun, make it work, and give people a normal way out.