Recently I visited a church where they had literally built their own prayer wall. It looked like a real wall, but it was made out of cardboard boxes and cleverly chosen wall paper with a stone print. Church members and visitors were encouraged to write their prayers on pieces of paper and put these through ready-made holes in the wall. Very impressive, but also very easy.
It's important to let people know what you do with their prayers. Do you read them and pray about them afterwards? Or do you see the prayers as being for God's eyes only, and you throw them away without reading them?
A giant prayer wall in the church!
Small holes through which you can place your prayer notes.
As light as a feather and very easy to move.