Do the Life Series Players do Autographs?

If this is the wrong thing to ask please tell me so I will delete this as I don't want to disturb the funny memes and talks here but do the life players do autographs?

I have a younger sibling who is a huge fan. I had to leave for work for a few months so I showed him the life series and he loved it. Safest thing on the internet to show him and I thought it was good so we have something to talk about. Somehow in three months he finished it all, all of Grian Hermitcraft, Then Mumbo, Then Jimmy Empires (I know nothing about them but he started sending me sherrif woody memes??) Like he loved it so when merch came I bought it for Christmas and he loved it even if it came in February, treasured.

Now I'm planning early Christmas shopping and I have to ask is there any way to get an autograph for any life series player? I know low chances but I wanted to ask if they did signings before or if there any way to buy something? Again if this is the wrong thing to post please let me know and I'll delete this but I hoped to ask.

Thank you