I have 6 shelves from Ikea, arranged in black/white combinations, with steelbooks and digbooks on top of them (ran out of space).
http://pictorealm.com/n/?dXNlcl9pZD01MTUmaWQ9MjQwNQ==
http://pictorealm.com/n/?dXNlcl9pZD01MTUmaWQ9MjQwNQ==