I found these bamboo clothespin at a local hardware supply store (it's also sold online at Walmart). It's pretty sturdy than the regular wood clothespin I've seen before.
I cut some regular felt with various Sizzix flower dies (Daisies and Flower Layers) and stacked them. I added a large button and tied it with rustic twine to the clothespin.
Finally, I glued a magnet at the back.
Now I have some pretty fall theme flower magnets to hold my kid's school papers.