Thank you for your question below. You can probably find mosiac artists in the directory of 'axis' website this is the link: http://www.axisweb.org/
I have a simpler idea which is just as effective and probably more practical too.
Paint the wall white, then add stripes in a shape (some ideas are; shape of Blackpool town centre, Britain, a house, a cow etc) like this image. Then add natural wood shelves, which you can use to display art work, objects to illustrate a subject, musical instruments they can play with.
