You take white shaving cream and put some in a ziip lock baggie. You then put a little bit of food color in the baggie. Let the child mix it up by squishing the baggie.
Then you help the child take the colored shaving cream out of the bag. I usually have them put the shaving cream onto a cookie sheet, but you can have them put it on a desk or table as well. Then The child can practice writting letters or number or their name in the shaving cream. They love it! They will usually ask to do this often.
I love this idea!! I have a daughter who will be 2 in december and she absolutely loves to play with shaving cream in the shower.... that is, of course! :)