Thinktype works a lot like notational velocity (write and search at the same time), but it's actually even easoer because it doesn't have titles. You can write the entire note from the searchfield. (I'm comparing it to a web app inspired by notational velocity here[1], never used the original because I don't have a mac.) [1]: https://notational.co/. - Source: Hacker News / over 2 years ago

Check out https://voicethread.com/. Source: about 1 year ago

Well, I teach primarily first-year-writing courses and discussion is a significant component of the course. But, rather than thinking generically about discussion, I prep assignments based on goals and outcomes. I choose tools and formats based on what I’m trying to accomplish and rarely does a traditional discussion board assignment work. Essentially, different tech tools allow me to create specific learning... Source: almost 2 years ago

Do you want Canvas-specific features, or would you be okay with tools you could provide a link to in Canvas? For example, I have had success with PearDeck (read the privacy agreement carefully so that you understand how Google will/may use user data) and a colleague of mine has created really cool assignments with VoiceThread. Source: about 2 years ago