Ways to highlight during a presentation

I miss the old [*OmniDazzle*](https://support.omnigroup.com/omnidazzle-troubleshooting/) product from The Omni Group that let us transform the mouse pointer in a variety of ways, some silly but some quite practical. Worked well for highlighting areas of the screen to focus the attention of the audience during a talk or presentation. I'm looking to make the mouse pointer more obvious, or darken the screen while keeping one region bright, or drawing colored crayon/marker lines, and so on. **Accessibility features** I'm open to accessibility features in macOS that could work to focus the audience’s attention. **Keynote features** Mainly I use Apple Keynote for presentations. If Keynote has dynamic tools for focusing the audience’s attention, that would be helpful. I also show other apps such as programmers’ IDE s during a talk, so using it outside of Kenote is ideal. **Other solutions** Are there other ways or other apps to accomplish this goal?