These series of wiki pages provide multiple tools to help in the creation of learning objects.
Audio/Music
Games
Mashups
Photos and Images
Quizzes/Surveys
Repositories
Screencasts
Social Networking Tools
Video
Web Authoring
For another comprehensive (and I may say excellent) resource about learning objects and software/hardware see http://uiuc.libguides.com/learningobjects (Lori Mestre's LibGuide).