Kids can be mesmerized with the process of marbling paper! The process is almost magical with how it uses colors and the properties of water and floating designs.
Two processes for marbling paper come to mind as a project for involving kids. The first is the use of shaving cream with either food coloring or liquid tempera paint. The video above shows the process of using the foam. If you have shaving cream at home, you may want to substitute the shaving cream for the commercially available art foam. It will do basically the same thing. Use either food coloring drops to add the color or fill a paint brush with liquid tempera and drip it into the foam. Practice different swirls to see what effects you will get. When you place the paper on the colored foam, both you and the child will be amazed with the way the colors pop out on the paper.
Another project you can try is one that uses wax crayons. Every home with kids probably has a glut of wax crayons that may or may not be used for different art projects. If you have extras lying about, this may be a good use for them.
Because of the use of boiling water with this process, please work with your child and don't let them get too close to the boiling water!
Take a tin can and fill it with water. Make a double boiler by putting the can of water into a pot of water on the stove and set to boil. With an old grater (not to be reused for food), grate brightly colored wax crayons (Crayola, etc.) and place them in little piles on the boiling water. Using a stick, swirl the colors together. When they are cooled and being careful not to burn yourself, place a sheet of paper on the soft wax swirls. Lift and place face up to cool.
These colorful paper swirls make great greeting cards. You can cut to size and glue the finished project to folded construction paper for amazing cards to give on special days, such as birthdays, Mother's Day, Father's Day, etc.