These are examples of the thin metal plates made of steel that are easy to obtain and react to magnets. Please use those 0.3 mm or more. If it is too thin, magnetic responses will be weak. 1 can be obtained in large quantities and is suitable for assembling many papercrafts. 2 and 3 are recommended for those who assemble 1 or 2 papercrafts. Please refer to the website link for detailed features and prices.

1) Paper fasteners
Website：Amazon
Material：Steel
Feature：Since it can be disassembled, one piece can take more than twice as many steel plates.

2) Snap off blades
Website：Amazon
Material：Steel

3) Multiple washers
Website：Amazon
Material：Steel