Mag-Thumb is a small fastening tool that allows notes to be hung on any hard, smooth surface.

Attaching a note to a surface such as glass or tiling usually requires the use of tape or some other adhesive product. These may leave marks, and can only be used a limited number of times.

The name Mag-Thumb is short for “Magnet/Magic + Thumbtack.” This fastening tool incorporates a small suction cup, a magnet, and a steel pellet to hang notes without damaging the paper or the display surface, and without generating any waste. The rubber suction cup contains the magnet. The steel pellet, which pins up the paper through its attraction to the magnet, is encased in a colourful cover.