What makes a project worth building
A portfolio project is evidence. A reviewer wants to see that you can
define a problem, get and clean data, choose and justify an approach,
evaluate honestly and communicate the result. A notebook that trains a
model on a famous dataset and prints an accuracy number shows very
little, because thousands of people have submitted the same one.
A project becomes convincing when you add something of your own: a
different question, messy real-world data, a clear baseline, an error
analysis, a deployed demo or a written discussion of limits. The ideas
below are starting points; pick one and make it specific.