Make erupting ice chalk paint. 1/4 cup each baking soda and cornstarch. add liquid watercolor paint and 1/2 cup water. Mix well w/spoon. Pour into ice cub tray & freeze. After it starts to melt, use squeeze bottle or baster to add vinegar & make them foam.
Rainbow Roses Get white of cream colored long stem roses. (Carnations work well too). Cut the stem according to the picture, you will then place 4 glasses of food color dyed water together. Put one piece of stem per color and allow the flower to soak up different colors.