We don’t have to start from scratch.
The audience you want to serve? They’re there already, engaging in great content created by thoughtful creators. Why not show up with them? (Perhaps the host would like a sponsor. Perhaps you could enhance the work already being done there.)
The complimentary companies you want to collaborate with? They’re there already, engaging with those you can best serve. Why not show up with them? (Perhaps their booth would be better with you on it too. Perhaps the event would be twice as good with you picking up half the bill for all the attention.)
You’re probably not first, they’re probably there already. Why not show up too?