Hi Bingxgook,
in addition to a free site each day you could consider working on any other number of projects. A hub site that some of your free sites link to, full of hsoted galleries from sponsors for example.
A Thumbnail gallery post is a common idea for a 'hub' site as well.
Blogging is 'in'. See my thread on the topic in this same forum.
You could also consider purchasing traffic for any one of the types of sites above. If you find a quality source of buyable traffic and ahve a nice site designed around it, well, it can mean big bucks
Just a few ideas.