I've been silent around here about this for a while until I built the portfolio a little bit, but I've started a free to a dollar assets project that will comprise of me... Well, doing exactly what it sounds.
Here you can find free pixel art that can be used for your games. All under CC-BY 3.0, so you're free to use and modify.
Also, if you're ever in need of textures, you can always look here: http://kiiragames.weebly.com/textures.html
as well. I have some more things on there, but those are the most notable right now. I plan on expanding the other pages with more assets to use, but it takes a while to make some of the others (Currently working on a platformer example by using my game's alpha).
Enjoy! And don't forget to let me know if you use any of it.
P.S. Will make an Indie GoGo campaign to hopefully raise money for my Free To A Dollar Assets project. I want to be able to keep my prices cheap so that indie designers can get what they need to start designing.