One of my speaking coaches pointed me to an amazing resource to find leads for both free and paid speaking gigs.
Your local Library!
More specifically a reference you can find at the library... The Encyclopedia of Associations
Back in the day this was a large 4 volume set that would list every association in the country. It is now 6 volumes and has gone digital. there are 2 volumes each for international organizations, national orgs, and state and local groups.
You will find associations for things you never thought would exist. I just sent a speaking proposal to the local Maple Flooring Manufacturers Association. I never knew that was a thing!!!
Every listing includes information about the association, web page, address, and contact information.
Some libraries will only allow you to access it in-house on their computers, but others will grant home access through their website with your library card.
You can sit down with a note pad or an open word doc and find organizations that you can reach out to.
So i would reccomend that you can dive into this resource and in a couple of hours os simply bumbling along you will find more opportunities than you can handle.
So get a library card. In fact, get a card for every library you can. When I travel I visit local libraries and sign up for a card. The more members they show in their system the more funding they can access. So I help them in every way I can.
You may find your library an amazing resource for other things with your speaking business. One of my local branches was recently remodeled and has a recording studio. I will be using it to record audio products to sell at the back of the room. I can even "check out" a sound tech to help me do the recording and produce it. And it's all FREE!!!
To Your Success.