PPC --> PayPal

Looking to turn $300 worth of Yah00 credits into PayPal money.

So far I've come up:

-Setup a site offering web development and design services for local businesses. Showcase some previous yet unrelated work I've done and hopefully snag a customer for at least $500 if I play my cards right...

I'm also thinking that this type of thing might do better if you actually get a little more specific and target strictly sites for air conditioning companies, contractors, pizza places and etc. Niche is always good right?

Yeah or do a whitehat campaign for some hot product on one of the networks.

There are plenty that pay well and with 300$ you should make some sales. Then even better once you start making the sells scale it up and keep the money coming in.

Re invest your earned money to keep making your ROI. That way you can have a steady stream of income not a one time deal.

Just something to think about.
Niches are good as well, most get less traffic but they are very targeted which is good.