Ask HN: Who's hiring? (part-time/temporary/freelance)

Similar to the "Who's hiring?" question, but this time aimed at part-time, temporary, freelance work. Some people might have some time available on their hands during the summer period, or need a temporary boost to their finances.

For example, I've got 1 month until I start my new job and I feel a bit useless not doing anything around the house. I would be interested to get involved in some projects. Any chance for temporary positions or collaborations?