Thanks for thinking of me!
First, a bit of legal stuff: if you send in an idea, then I (and my company) may use your idea, and don’t have to credit you. Here's the formal policy about that. I almost certainly will credit you, of course! But this is so that if someone happens to send in an idea I’m already working on and then thinks I’ve ripped them off, I (and my company) have a legal defence. Yes, apparently I have to worry about that now.
If you’d like some pointers on what makes a good video idea, I’ve put together a page about that!
If all that hasn't put you off: email me at 📧 firstname.lastname@example.org! I do get a lot of messages, so I can’t guarantee a reply, but it is appreciated — and if I do intend to use the idea it shouldn’t take me too long to get back to you. Thanks very much!