Clocks Apps is an extremely easy project to start with your contribution and meet the people behind the scenes, which by the way are very cool guys. All the developers are cool :)
This is how about Clocks looks like.
Seif says ”It is all written in python so it should be easy to just jump in and contribute to a “core app” for GNOME. We need some help with our bugs and most help with autofoo and hosting on jhbuild. So if you are up for it you can find me or allan on #gnome-design & #gnome-clocks and files bugs at https://bugzilla.gnome.org/buglist.cgi?quicksearch=product:%22clocks%22+”