$15 for an interlocking card. CD sized. http://www.etsy.com/listing/95256145/13-cd-flower-petal-envelopes-022-kraft
E is a piano album by Furze Chan on which there are three songs in E major. Recorded in April 2013. Beautifully packaged in a glassine sleeve, featuring a cover image by Tang Ho lun, along with a simple card insert.
Over the Rainbow by Eva Blanes, via Behance. Great die cut.