These IKEA bookcases most be one of the most upcycled pieces of furniture ever. My attempt was light green in the inside and dark on the outdoor. It was old wall paint and then varnish. I had a plan to stick maps on the inner, buy never got round to. It was probably one of my first upcycles.
Upcycled IKEA bookcase 
Upcycled IKEA bookcase
Cool Upcycled 