Thanks! I don't have a Hobby Lobby near me, and our Joann's kind of ... well, isn't that great. When I first did Internet searches, I couldn't figure out what to call the darn things, so I didn't know what to look for!!
I did find an online source:
www.save-on-crafts, I think it is. I looked on eBay (I really like eBay) but there wasn't anything much. I think I'm going to see how much it would be per-magnet at save-on-crafts, and buy them from there. They're sold by the pound, so I'd have to see how much it would cost to put these together.
I've been thinking about doing little magnet kits somehow -- 4-6 or so magnets in a theme, either a color scheme, or letters or something. One idea I had was a red and pink color scheme, using the letters XOXO ("hugs and kisses"). Or the same idea with LOVE, etc.
Thanks, everyone!
-- Heather