I work part time (still in school full time) at a wholesale club. A lot of the adults there work part time so they have a little bit of income while they job hunt. 180 a week may not be enough to live off of, but I would imagine for four hours a day it gives you a break from job hunting and helps boost your morale along with giving you some extra cash. These four hours a day are nothing, and if you really wanted flexibility, you could work night shifts at places and then you still have all day for job hunting and whatever else.
I am not sure if this will interfere with any money you are getting during the transition period or not though.
Good luck with a new job!