- Jamboard app: https://apps.apple.com/us/app/jamboard/id1143591418 is a sharable whiteboard. Easy to draw on, multiple boards (pages), everyone can draw on the same whiteboard simultaneously, easy to point at things: others see your “laser pointer”. Great for office hours, or for students doing group projects, or to meet with students about research. Not for lecture though: may not handle more than ~ 10 participants at once.
- Mirror iPad to Mac using lightning/USB cable and QuickTime: https://www.softwarert.com/mirror-iphone-ipad-to-mac-quicktime/
- DIY document camera: already mentioned — here are pictures of 2 examples using a phone (you could also use a webcam connected to your laptop)
Image 1
Image 2 - We already mentioned connecting an external device (e.g. webcam or iPad) to a laptop while recording your laptop’s screen. QuickTime solution to do this: https://appleinsider.com/articles/18/03/26/tip-record-your-ipads-screen-on-your-mac-with-quicktime-player
- Android device screen recording: various apps, including AZ Screen Recorder
https://www.howtogeek.com/176956/how-to-record-your-android-devices-screen-with-android-4.4-kitkat/