Use duct tape as a drink holder
You can’t ever have enough cup holders in your car. It’s almost a scientific fact. To be honest, all modern vehicles have plenty of cup holders, but sometimes they are too small to hold large-volume cups. Luckily, there is a quick fix for that.
Use a roll of duct tape as a cup holder. Glue one end to the dashboard and place the cup in the ring. And you are good to go. It might not be pretty, but it works.