I like these so much I’ve given them a whole page
Mashup - flickriver badges, this uses a flikr photostream and creates a radom selection of thumbnails that changes each time the page reloads. You can like to specific users /groups or sets of photos from that user, or images using the same “tag” or just random images
Flickriver badges can be found at http://www.flickriver.com/badge/create
overdose here on surface design

The one below uses a selection from a gobal tag Sunflower

Flickr group “colorfields”
“This group has a simple concept: take photos of a frame-filling field of A SINGLE COLOR and post that. It can be textured, have imperfections, etc…but the frame should be filled with one color. They should be abstract enough that the color is clearly the focus, and the most important thing in the photo.”
Use the Color Fields Color Finder to locate photos of a particular color.







