Here, I'll save you the time and you don't need to look so hard, just browse through the list and you most probably will find what you are looking for.
- http://www.sxc.hu/
- This website has the greatest amount of copyright free photos and images that you can use.
- http://unrestrictedstock.com/
- http://www.stockphotosforfree.com/
- http://www.freedigitalphotos.net/
- Useful but having to input captcha everytime you want to download an image really is a mood-spoiler.
- http://pixabay.com/
- Loads of scenery pictures for your perusal. Register to skip captcha.
- http://www.clker.com/
- Plenty of free clipart images to use
