Amazon with Newera USA Inc has the PAHTTO 4-Piece 4.5" Collapsible Magnetic Parts Tray Set (‎IT0372-NWUS) for $9.99 with free shipping on $35+ or with Prime.

Each tray measures ‎4.5" x 4.5" x 2" and can collapse to 0.8".  Comes with telescoping magnetic grabber. Useful for professional auto technicians, mechanics, engineers, carpenters, plumbers, hobbyists, DIYers, and more.