After many requests I've assembled a kit with all my favorite marbling supplies! Currently the trays are on back order, hoping to ship the next round within 2 weeks.
Choose from two kit options 
Standard: 
11 x 14 tray
3 types of paper
Eight (1 oz) bottles of acrylic paint, specially formulated for marbling (Full rainbow plus B+W)
A painters palette for color mixing
Pipettes for applying mixed colors
Bamboo Stylus
Five plastic straw brushes (for stone pattern) 
Carragenan
Alum
A how to guide with recipes and replacement supply resources.
 
or Deluxe Kit, which includes the above PLUS a standard comb for pattern making and 2 silk textiles to print on. 
 
*A blender or stick blender is recommended for mixing the carageenan, but a whisk could be used instead and will require a good deal more work.
I also recommend acquiring a half gallon jug and gloves for working with the alum.