Check The Container Store, and Container and Packaging, online, they have everything. They have PET jars similar to the new MDC jars for as low as 63 cents.
I too like the Pyrex and Wide mouth mini Ball Jars.
Close out stores like Home Goods, TJ Max and Ross usually have small canning and storage jars. Hobby Lobby has a good selection of canning and craft jars.
You also might look at Japanese covered ceramic rice bowls. Here in California there are a bunch of Japanese discount stores, like Muji and Daiso. They sell a wide assortment of beautiful ceramic and plastic covered bowls, they make great shaving bowls floating in a sink of hot water to heat your lather. Some have textured insides. They sell for as little as dollar. Pretty sure they do online.