check our smoke-alarm batteries.
then, have everyone sit silently and pray in their hearts to god, asking him to help them rid their hearts of this struggle or sin. next, have everyone tear up their hearts into little pieces (or send them through the paper shredder–with supervision) and throw them out!
finally, pass out new hearts to the kids, ones that have psalm 51:10 written on them. you can even allow them to write it out themselves and decorate it with markers and stickers if you desire. have them post it in a place where they will see it often reminding them of their desire to have god create in them a 