A few nice free image download images I found:
Free Pink Palm Trees Paradise Postcard Creative Commons
Image by © 2006-2013 Pink Sherbet Photography
Free creative commons
My photos that have a creative commons license and are free for everyone to download, edit, alter and use as long as you give me, "D Sharon Pruitt" credit as the original owner of the photo. Have fun and enjoy!
Image by smallislander
There are just over 130 textures and so on in this set.
Please feel free to use them for your own work. Just let me know when you do so, so that I can see what you've made of the image that you've downloaded, using the comments section.