Raffle Random Name Generator - for hybrid session

I am getting a session ready for COABE 2022 and challenging myself to submit my proposal as a hybrid. I want the full experience for participants online as well as those in person, so I'm trying to think through the details. I'd like to do a raffle and since we don't get participant information, I can't generate a list of names to enter ahead of time at a site like https://wheelofnames.com/. My head has enough going on before a presentation that I don't want to be collecting names to enter.

Do any of you know of a tool where participants can easily enter their own name and I can select a winner at the end of the session with a click?