To have fun w/ photo effects check out Cartoonize by clicking here.
Also, check out Big Huge Labs for other ways to have fun w/ photos.

Thanks to Free Technology 4 Learning for the tip.
"We may not have ended up where we intended to go, but we ended up where we needed to be." Douglas Adams

Corkboard Me is a wonderfully simple site for creating collaborative sticky notes. This site works very similar to Wallwisher, Pindax, and Spaaze, just click on board and start typing away to add a sticky note. This site generates a unique URL that can be shared w/ others to facilitate collaboration.
Pollmo is a simple new (beta) site that I joust found out about on Free Technology 4 Teachers. This is a great site for making simple polls by adding a question, answer, and then picking a skin (theme). Once that is a done grab the embed code to add the poll to your site.
Lucid Chart is a nice free (for education) site for creating online charts, diagrams, wireframes, etc. It has a very easy to use drag-n-drop interface that that reminds me a bit of Lovely Charts.
Folding Story is a wonderful new site for collaborative writing that I just found out about from, Free Technology 4 Teachers. This is a site where users can either start their own story and then share w/ others or join an already existing story to collaborate on. There are other sites that accomplish much of the same thing, but Folding Story might just be the easiest.
Chirpstory is an interesting site that allows people to create a story from tweets on Twitter. This is done w/ a very easy to use drag-n-drop interface by adding tweets and links to pics, videos, sites, etc. This is a fun/innovative way to share information w/ others.
Finding images on the internet for educators to use has been a common problem problem for many alike. This can happen for a number of reason such as: copy right privileges, inappropriateness, etc etc.