There aren’t a ton of items with St. Agatha on them that you can buy, but fortunately most are in good taste.
Here’s a nice little statuette.
Here is a pocket stone that one presumably can use for prayer.
This pendant has some soil from Catania in it.
This is a relic rosary that Pope Francis blessed.
I’m partial to this greeting card with a reproduction of an image of St. Agatha by Wenceslaus Hollar in the 17th century.
If you want to learn about St. Agnes, click here.