Here's an activity we did last Easter.
The point was to show that the temple curtain symbolised our sin
separating us from God, and that Jesus' death made a way for us to get to
During the story, I explained:
"Jesus was dying for us. We have all done bad things and don't deserve to be God's friends."
So I got the children to write/draw sins on a big sheet of paper*.
Later, at the point in the story where Jesus died:
"In the temple there was a curtain. God had a special room behind, that no-one** was allowed to go in, to remind people that God is good and we can't come near to be his friends.
"When Jesus died, the curtain tore - "
then I suddenly tore the paper in half. That startled them!
"Now we can be God's friends."
*This actually took quite a long time, as they are just beginner writers.
I told them it didn't matter how they spelled them, but they still
wanted to know. Also they didn't want to stop writing.
**Well, technically not no-one, but one person in the entire world, once a year, is pretty near no-one. Of course, that one person once a year was very significant, but there really wasn't time to go into that.