There is always that "other" category.
Drop Box - store and share files.
YouTube for Schools
Mind Mapping with SpiderScribe
A Simple Timer
Ad free YouTube Videos.
Short URLs - Two of the best!
Video tutorials with Screen Toaster and Jing! OR Screen Capture for still images.
Present Me - Presentations with slides and Audio/Video
Timeline generator - create simple timelines.
Dipity - for timelines, flipbooks, digital storytelling.
Hot Potatoes quiz and crossword generator.
MyStudiyo generate multimedia quizzes.
Download YouTube to play off line.
Wordle - generate word clouds.
Google Wonder Wheel - visual mind map of search results
Scoop It to gather media on your favorite topic.
