Pressed paper poker chips seem to be the poor ugly child of chip collecting. I love my children all the same.
Here are a few examples of advertising and club chips to give you a scope of what has been made over the years.

in the relm of generic chips there are a few varieties in the simple designs. You can see the differences in the Eagles, Fleur de Lis, and Horseshoes.

There are also a few variations on the way chips a manufactured. Some with ink...some without.

these circle chips are very thin. Only about two-thirds as thick as a regular paper chip.

One of my favorites is this "JH" monogram. An embossed private chip is quite unusual.

There are other paper poker chips but, this gives you a crash course on the subject.