If you build a tool off of Flickr, it apparently must end in the “er” sound spelled with only the letter “r”. Anyway, I ran across some more cool Flickr do-dads.

ColorPickr
ColorPickr is just a color palette that pulls images from Flickr based on the color that you chose.

Fastr
Fastr is actually a pretty fun game that you could waste some serious time playing. Once you join a game, it shows you images one at a time from Flickr and you have to guess that tag that those images are from. The faster you guess, the more points you get as you play against other people in the game.