For some innovation, I can suggest Microsoft AltspaceVR. You do not need a VR headset, yet it provides for an immersive environment.

If you are looking for traditional channels (Teams, Zoom, and the likes), my best advice is to remain creative and engaging. This means, you can get all of your audience to dance prior to, and every 15 to 20 minutes during your presentation, as corporate as the environment might be, it is sure to keep people energized and attentive to your message. Otherwise, loads of creative ways to seek engagement online.

Hope my outside the box, provides for some useful creativity space.