I thought so too earlier but you CAN use a fridge magnet no problem, - I do.

More on this subject:



Quote: This pin place/scissor spot is a magnetic spot for your sewing machine that attaches with a suction cup. It easily grabs your scissors; pins and needles without you having to take your eyes off your work. Safe for sewing machines; sergers; computer or monitor (microchips are not effected by magnetic fields; magnetic storage devices such as diskettes are vulnerable to magnet fields); die-cutting machines and much more! Made in USA.

My pincushions are many, mostly the "tomato"-type but also pillows etc.

I make the tomato ones by sewing all around right sides together pretty fabric/fleece. I then cut an opening in the fleece where a thread will cover later, turn it and stuff with wool yarn before closing it with some stitches and do the thread wrap bit.
Some I embellish with a button, others just knot frayed up.

Some old images from my blog.









*Hugs*