Disclaimer: Do not, I repeat DO NOT do this activity the day before pictures. How do I know this? I did this the day before pictures and the result was a lengthy bath that involved baking soda and vinegar.
Mister, Ladybug and I made these ice cubes from a candy mold using water and food coloring. If you use a candy mold you will need to tape the opening closed or all the water will spill out. I know this because it took a few attempts to get the water to stay in mold. I found that it was best to top it off after I put it in the freezer. I know I am full of advice today.
After a few days I took them out and let the Wee One paint. When I gave her the ice cubes I told her the color and the name of the ocean animal. She painted a little, tasted a little, and painted a little more.