Need advice on stamping impermeable items [View all]

I haven't done stamping since we cut shapes with potatoes and stamped craft paper with water colors at camp, so I am not at all familiar with the current stamp technology.

A group I am with needs to make favors for goody bags for a once a year gathering. A thought for future favors is to paint magnets with cute designs. I can buy ceramic disc magnets for cheap, spray paint them with an acrylic paint. Some people have hand painted little flowers on their magnets but the group I am with does not have that kind artistic talents.

I'm thinking of stamping designs on the magnets. My husband found some cute stamps, one set with flowers and leaves, the other with animal paw prints. Will these work to stamp acrylic paint on the painted surface of the magnets? Any tips as to techniques for applying paint to the very small stamps to get clean stamps on the magnets?

If this won't work, any suggestions?