I proposed an idea to speak at ElixirConf in Austin, TX. This was a local event. The event gave me a free ticket, and I was not paid to speak. The event did not pay for my travel and accommodation. My employer paid all of my travel expenses, and I was working while speaking at the event. It took me 30 days to prepare for my 40 minutes speaking slot, and I had a great time. This was a not for profit event.