Set of 30 Personal Whiteboard Mini Dry Erase Marker Erasers
Amazon.com : 30 Pack Magnetic Whiteboard Eraser for School Classroom, Office, Home - Buytra Dry Erase Erasers Cleaner for Dry-Erase White Board, 1.97 x 1.97", Square Shape (Green) : Office Products
Magnetic Dry Erase Erasers for Kids and Schools - 60 Pack Assorted Colors – scribbledo.com
Amazon.com : Amazon Basics White Board Eraser, Dry Erase Whiteboard Erasers for Office, Home and Classroom, Black, 4-Pack : Office Products