We are still playing with patterns and today we did something fun
We filled deep baking trays with zalo and water, blew so that there were lots of bubbles and painted with it: We used thick cardboard sheets.
Dripped over watercolor paint (bought from Lekolar) and caught foam with a spoon and put over. The photos turned out great and the children thought it was great fun. They also scratched the pictures with their fingernails to create a pattern. Attaching some pictures so you can see.