Ballpoint pen (black, blue, red, green) and markers.
Working midnight shift at the bingo hall on a day when I had foolishly thought would be my first day of giving up coffee and I lasted about five minutes in the dismal bingo hall lighting where you can’t tell if it’s day or night. Giving up coffee was a bad idea anyway, I’m never going to do it.
One woman got bingo four times in a row that night.