Flexible magnetic strips w/ adhesive are great for making small & lightweight projects magnetic. Just separate, peel off the adhesive liner and apply. They can also be cut easily with scissors...

Gear Spacing Ring 30 X 17 X 10 AIR.0025

Euroboor

Price: $28.50

Gear Spacing Ring 30 X 17 X 10

MK12 etching carbon block 1.5 x 0.5 x 0.9inch WELC4029

Cougartron

Price: $61.94

Cougartron MK12 etching carbon block 1.5 x 0.5 x 0.9inch

Part #10 Aether 4.5 x 4.5 0.625" x 5.5" bolt (1pc) 0.5" nyloc Nut (1pc) AE4.5/P10

Bluestreak

Price: $62.31

Part #10 Aether 4.5 x 4.5 0.625" x 5.5" bolt (1pc) 0.5" nyloc Nut (1pc)