I proposed an idea to speak at React Rally in Salt Lake City. This was a local event. The event gave me a free ticket, and I was not paid to speak. My travel and accommodation was fully covered by the event. My employer did not pay my travel expenses, and I used my PTO to speak. It took me 5 days to prepare for my 20 minutes speaking slot, and I had a great time. I'm a woman who has been speaking for 1 month. This was a for profit event. Also, It was a great conference, organizers really went out of their ways to prepare and make sure the event is friendly and harrassment-free.