If your toddlers eats at the regular table, do they use a placemat? If so, what kind?

We just started having C sit on a booster seat on a counter stool at our counter, instead of her hook on high chair with tray. Unfortunately this is coinciding with her really wanting to drink out of an open cup, which occasionally spills. Plus the crumbs. Trying to decide if it's worth having some kind of placemat for her (she uses plates and bowls and such but sometimes puts food on the counter anyway) or just ride it out? She's 2.5.