Have your kids tried painting with rubber bands? This messy process art activity is a lot of fun! This is a sponsored post written by me on behalf of Lava Soap. All opinions are my own. Please see my disclosure policy. OK - so before we start, I have to warn you. This CAN get messy! We did this inside but if you have more than one (quite careful) child - you may like to take it outside. Oh, and some safety glasses are useful because the paint splatters go everywhere! To set up the painting…