Target's Garden Department generally leaves us a little underwhelmed, but in the main store we saw these white ceramic pots that were simple and sweet. We'll add them to our list of Best White Plant Containers. If you're bored with white, they also come in yellow.
They're 10 cm across and sell for $2.99 a piece. The white pot also came in a 14 cm size that sells for $4.99. Keep in mind these don't have drainage holes, so they're only for hiding another pot inside (or being really careful about how much you water).