Fellowes Thermal Laminating Pouches, School Supplies Letter Size Sheets, 3-Mil Thickness, 200-Pack, Clear Finish for Classrooms & Offices (5743401)

I buy full sheets in letter size, so as long as you don’t mind arranging them and recutting them it should be fine. This is the brand I use because they’re very inexpensive compared to other options: https://a.co/d/057cH0AX