Mapillary browser extension
Mapillary is a street-level imagery platform powered by collaboration and computer vision. It's also the team I've been a part of for the past year.
One tiny project I made before joining Mapillary was a Chrome browser extension that showcases amazing images on Mapillary that were uploaded by users. You can find it at the Chrome web store. There's also a Firefox add-on now available.
It lets you see an awesome image every time you open a new tab and you can start exploring from there.
I've been updating it, adding fresh images and tweaking and simplifying it for a smoother experience. You can see the source code in the mapillary-chrome-extension repository and use it as a starting point for your new browser extension.