It could get messy so old clothes, aprons, something to cover the table with and an old towel that would be great. I will bring some examples of what I have done. Above all it will be fun.
This is for you a if you want a list. I will bring everything needed so don’t panic.
Ist Method
Shaving foam
something like a baking tray, cat litter tray, or just a piece of tin foil.
Acrylic paint but needs to be thinned down a little. I will bring some. A palette knife or Longish ruler.
A piece of felt, or some fabric. I am led to believe that acrylic paint will stick to anything.
I cocktail stick or kebab stick.
2nd Method
If you have a look at the video tutorials on this page it will give you an idea of the things you can do.
Marbling Kits - Marbling 4 Fun - Marbling, Art Supplies, Kits
I have the kits for these and will bring them.
If you have 100% cotton then it needs to be mordanted. It might work on silk but again would need to be mordanted, I will bring some mordanted fabric.
I don’t think you can use anything other than natural fibres.
Paper, not cartridge paper nor coated paper. Its a bit experimental on this one, depends on the paper.
Wood or pebbles can also be used.