hand-marbled paper on
bridge/euchre tallies
see marbled tally sets

I first learned paper marbling from Mimi Schleicher, in 1998, at Arrowmont.

Marbled designs on paper are created by ---
(a) starting with a mixture of seaweed
      and water,
(b) floating paints on the surface of the
      mixture,
(c) using styluses and combs and rakes
      to create patterns in those
      surface paints,
(d) carefully laying a sheet of prepared paper
      onto the paints to lift and capture
      the design.

After rinsing and drying, the marbled paper is pressed flat and sealed with fixative.

There are a large number of well-recognized, named designs such as peacock, snail, chevron, bouquet, gel-git, and nonpareil.