I have one of these printed off and laminated (as A4) for each child. I staple a clear polly pocket to the front of this and when a child is proud of work or if I think they did something particularly well it can be popped into the polly pocket for display. I have a section of my wall under the whiteboard dedicated to this form of self- assessment. At the start of the school year I display all of these and when a child is ready to display something they can come up themselves and put their work into it. It means when a child doesn’t feel like they have anything they want to display rather than have an empty polly pocket this is sitting behind it.