This idea, originally from Revd Sonia Falaschi-Ray, may be used in school collective worship on Ash Wednesday:
As a form of confession, the children are invited to suggest sins that they would like to see the back of – they may be anything from personal to global. Each suggestion may be explained/explored etc a little, then is written on a red piece of paper and put into a large bin labeled ‘sin bin’ with these words:
Leader: We bin this sin.
All: We bin this sin.
The bin and some spare red papers may be left in school for the whole of Lent, to enable children to add to it if they wish.
This idea is archived under the LENT, HOLY WEEK and EASTER tab, on the Ash Wednesday page.