Got my birthday in less than 30 minutes and idk what to do

My 24th birthday is on a Monday. My mom decided to do a surprise visit and she will be around the whole day. Idk what to do. I am potentially looking at a car cafe and maybe mini golfing in Chadstone (not sure she would be into that) but that's it. Both of my friends would have work and would be meeting us on Friday instead for dinner. I am not into my birthday really but I gotta put up a happy front for my mom to make sure she does not worry. Any help appreciated.