That 2-inch square white plastic magnet with what looks like an N in a circle on it is a whiteboard magnet from a company named U Brands (the N is actually a

2x2 Magnet Sets – American Button Machines

U Brands 8ct Magnets Cube High Energy : Target

45 Pieces Whiteboard Magnets Round Refrigerator

Quartet® Prestige 2 Magnetic Total Erase Whiteboard, 48 x 36

Viztex® Glacier Teal & Black Plan & Grid Glass Dry Erase Board

U Brands 35 in. x 23 in. Magnetic Dry Erase Calendar Memo Board

Home decor meets function with this white decorative wood frame combo board. Half magnetic dry erase and half linen bulletin, this multitasking board

U Brands 2 in 1 Combo, 20 x 30, Whiteboards, White Frame, Linen

U Brands Magnetic Dry Erase Board Value Pk, 16 x 20, Whiteboards

Magnetic glass, dry-erase board is a perfect for frequent and heavy usage areas. Highly versatile, the writing surface doubles as a bulletin board so you can use rare earth magnets to pin notes, memos and more. Tempered magnetic glass is only compatible with high-energy neodymium magnets. Modern frameless feature lets you hang multiple glass boards adjacent to each other and expand the writing surface. Premium, glass writing surface will never stain or ghost.

U Brands Square Magnetic Glass Dry Erase Board 12 x 12

The Board Dudes 17x23 Magnetic Dry Erase Board (CXT41

This non-magnetic black glass dry-erase board is a perfect and functional solution for the frequent and heavy usage areas of your office, school, home, or any commercial space. Clean, contemporary, and frameless product design lines will add a touch of subtle style to your wall. The modern frameless feature enables you to hang multiple glass boards adjacent to each other and expand the writing surface to fit your custom space needs.

U Brands Black Glass Dry Erase Board