Vimeo users suggest great projects to practice using new techniques. I love this project to which people have been contributing for 3+ years.
"5 short, 5 second clips -- no music -- and try not to use clips you've used before :)
[If you also post the video to Vimeo] tag with: 5 Vignettes and 5x5
and maybe put a little context behind each clip if you want to
Example: vimeo.com/clip:195904
*** User Ryan Brown made this request and I think it makes a great project. Plus, its a great way to use old clips or clips you couldn't figure out what to do with!***"