I wonder if you could read The Rainbow fish togehther and use it to talk about friendship and self esteem. Perhaps write or draw on the scales things that make us beautiful because we can share them (a smile, a hug, being helfpul etc) This would work really well as a celebration activity with a big fish (perhaps reflecting on what we want Messy Church to be like).
Buntes Basteln mit Klopapierrollen - Feuerspeiende Drachen *** This fire breathing, toilet paper roll dragon is SO MUCH FUN! Blow into the end, and it looks like flames are coming out of the dragon's mouth! Such a cute craft idea for a rainy day!