Deep in the distant past you probably got a Welcome template dropped on your talk page. One of the points it raises is, there are always things to do on Wikinews. As a news site you could write articles until you had worn the tips off your fingers, but there would still be a demand for more. Outside the main namespace where articles go there are also things that may need your attention. A number of these are items that can only be handled by administrators, but that should not stop you looking at the appropriate pages and seeing if you can get involved - or learn what you will have to deal with when you are made an admin. Much of this is "housework", required to keep the site well maintained. The more people go through a few of the following items when they first log on to Wikinews, the less of a backlog will build up.
This - regrettably - is one only for administrators. It is a task that fills up recent changes but doesn't seem to achieve much else. Yet, it keeps us from having thousands of articles that are potential vandalism targets.
Another one for administrators, but worth keeping an eye on even if you don't have the privilege.
Up early on a Sunday morning? Been following our news coverage this week? Stick a question or two in the quiz.
This is another one for everybody, but there are parts that are admin-only.
Check the water cooler for new messages and comment on them (or vote if appropriate).
If you're feeling morbid, why not write an obituary for someone who's not actually dead yet?
This is a list of images we use commons has modified or deleted or done something to. Often an image gets deleted if there are two images with the same name. When this happens the deleted image should be replaced with the other version. (Many articles are archived and will require admin rights to edit, but some don't)