Wiley defines learning objects as "any digital resource that can be reused to support learning" (2000, p7). With that in mind, you will find tools for creating videos, podcasts, graphics, presentations, timelines, and e-books.
Various types of videos can be created: animated videos, interviews, screencasts, recordings of slide decks, recordings of live sessions, or live demonstrations, for example of students being guided through the research process. Consider universal design during video development, such as captions, transcripts, and audio descriptions.
More tools and tips:
Here are some tools to produce scheduled audio podcasts. Video podcasts (vodcasts) can also be made with the video production tools above. The iTunes store has largest selection of podcasts but Google also now supports podcasts in the Google Play store for Android. There is also Juice free software for listening to podcasts.
Try these alternatives to PowerPoint and Keynote:
I have not explored timeline creations as student activities but if you have, kindly share your thoughts. These tools are often recommended (Storify is no longer available):
There are many e-book convertors and extensions for word processing programs but here are a few options:
Bottom of the page bonus: Geniverse - get pumped learning about genetics (and dragons) before moving on to the gaming technologies.
See the full bibliography for works consulted.
Wiley, D. A. (2000). Connecting learning objects to instructional design theory: A definition, a metaphor, and a taxonomy. (Download) In: D. A. Wiley (Ed.), The Instructional Use of Learning Objects: Online Version.