Online image and text generators are fun. Being able to do presentations, spreadsheets, and word processing documents online is handy. Digital Photography is fun too.
http://www.diigo.com/list/cat509/photo
http://www.slideshare.net/cat509/digphoto/
http://www.diigo.com/list/cat509/flickr-libraries
http://www.diigo.com/list/cat509/cs-flickr
http://www.diigo.com/list/cat509/sch-lib-flickr
https://docs.google.com/presentation/d/1FV_t3YRhYPbh0eTE7ASAOxwcpIQzt3fGWZCa1r_geC4/edit?usp=sharing