Baby massage for when your baby has discomfort from a cold or teething. (This was pinned to the main page -- STOP DOING THAT, PINNERS! -- and I hunted it down for the article specifically. You're welcome.)
If you need a super simple volcano recipe, it doesn't get much easier than this. Prep is about 3 minutes, and there is no clean up necessary. Easy Baking Soda and Vinegar Volcano Eruption for Kids by Preschool Inspirations