Self portrait ideas Mapping 2013 on Behance Use a process like this for "identity/self-concept" activity about skin color/shade/tone/palette. Put vertical photo strip of every child together on a couple images to make a collective face.
Metalmorphosis - mirrored water fountain by Czech sculptor David Černý -- Whitehall Technology Park in Charlotte, NC. Massive stainless steel layers rotate 360 degrees and occasionally align to create a massive head.
"Cover rocks with mirrors and they look like melted disco balls." I don't think these are rocks but if you could find a "melted" looking rock you could cover it it pieces of mirror or CD's to create a "Melted Disco Ball".