I've been building software to solve issues like this[1]. The question is always: why is it so hard to show what you want on the screen?
So I've built the system with a separate control and presentation. It connects to PowerPoint, Google slides, etc so you can present through web and control it anywhere.
I've also recently added tools to annotate slides just like described in TFA. It's still quite basic but if you're finding yourself in situations like OP, give it a try and let me know how it goes.
Yes, flutter.dev is owned by Google. You can at-least have reasonable belief in the Android figures even if don't trust the iOS one due to conflict of interest.
Shameless plug: I made Theopenpresenter.com that can do this. You can find the app in GoogleTV (not AppleTV due to browser limitation). And you can control it from phone or anywhere else.
I'm working on TheOpenPresenter for this, do give it a try. You can pretty much open the landing page, scan the QR code and you're set. It's also open-source and pretty mature now.
I love AI but one thing that is a bummer is: Skills that used to be straightforward but people generally never took the time to learn are now trivial with AI.
Things like regex and CSS are not that hard if you take some time to study them. People don't though. Now I don't have that advantage anymore since AI can do them so well. Or... Maybe that could be an advantage since there will be even less people learning it.
They were also easy to look up on the fly as one needed them too. So really really knowing them was never a true advantage. For me it wasn't that I never took the time to learn them. I realized long ago that it wasn't worth my time to keep that information in my brain, and I offloaded it to google 100% of the time it came up in my day to day life. Now I offload it to Claude, same thing.
I do agree with that. I wouldn't say I really really know them either. I know enough to sound competent and be relied upon, and then I can google them to remind myself of the details.
I realized later you likely meant the latter anyways and yeah that's much different. It's important to know what these things are, how they work, and why one would need to tweak them. It was never important to have the syntax on instant recall.
So I've built the system with a separate control and presentation. It connects to PowerPoint, Google slides, etc so you can present through web and control it anywhere.
I've also recently added tools to annotate slides just like described in TFA. It's still quite basic but if you're finding yourself in situations like OP, give it a try and let me know how it goes.
[1] theopenpresenter.com