Home made Marbled Paper or Lets make a mess!

Went to a short card making class at my local childrens centre just before Easter, more about what you could make with children about. We made some marbled paper, didnt like the 'oil' method, but shaving foam, food colouring and a tray...and I loved the results.
Made some more today

Normal shaving foam (cheapest you can find) spray a layer onto a tray, smooth out, drip on some food colouring, swirl about with a fork/chopstick etc, lay on some cardstock, press gently, peel off, scrap off with the side of a ruler, leave to dry

Tip. Have a roll of kitchen to hand