This was by far the most difficult... and most fun (!) cake I've ever done. This is a 30th birthday cake for a guy who is a DJ. It's a replica of his Numark IDJ2 Mixer board and Sony Headphones. As you can see, the cord from the headphones spells the birthday boy's name. :) The headphones are fondant covered styrofoam and foamcore, but the mixer board is just a simple sheetcake.... that was the easy part. Using the detailed photos and dimensions on the manufacturer's website, I then painstakingly recreated each and every button, knob, lever, and "thing-a-ma-bobby." I had a pretty late night last night, needless to say.