I bet this is NOT what you expect... I wanted to see if I could do marbling with alcohol inks!
I put an inch of water in a shallow dish then I got out three colors of alcohol ink and dropped three drops of each color on top of the water. Then I swirled a bit with a toothpick and dropped a piece of white cardstock on the surface of the water. It has to be pulled and dried immediately with a heat gun to keep the paper from buckling too much.
I started with a yellow-green, a blue and a red. After drying I cut it down, mounted it over a patterned paper and card base. I stamped two cupcakes at the top and a greeting on the lower half. I stamped a sentiment border across a striped strip and mounted that to support the cupcakes. I colored in the cupcake flowers to match the marbled paper.
For the second one I used a blue, a turquoise and a green. I did not swirl this one much so the color blocks are larger. I cut this one down and mounted on patterned paper and cut a text-print with a flag bottom to mount over it. Before mounting, I stamped a tag-shaped greeting , punched a hole and tied it around the banner with scrappers floss. I stamped a greeting at the bottom of the marbled paper and then mounted three butterflies punched from a paint sample strip. Each of these got a purple rhinestone center.
So, 'yes' you can do marbling with alcohol inks. And now you know!When I do this again I will use watercolor paper to help with some of the buckling. I wonder if it will take the color differently... That is an experiment for another day.