Here are some feature samples:
Historical feature, such as this one. The 50th anniversary of the first woman to run the Boston Marathon.
Adventure feature, an exciting or harrowing experience like this one about a boy lost in the waves.
Seasonal features: tied to season or holiday like Mother’s Day
How to do it features, like a health story about how to breath properly.
Occupation or hobby stories. How about this story of a 17-year-old rock climber.
Behind-the-Scenes feature, like this one on staging a ballet production
Here is a trend story on Sriracha sauce.
A profile on author William Zinsser.
A feature on a newsworthy place, a kitchen for food start-ups.