Lets run through the pop culture references first - When I first saw this I remembered the Family Guy ep where Peter had to choose between a boat and a box. Then I remembered the Futurama episode where Farnsworth created a box with a parallel universe. Lastly, I remembered Pandora's box and how it made Kratos into a god. Well unfortunately Skylab's box wasn't a boat, it wasn't the gateway to a parallel universe and it didn't make me a god.
What it did have is this stuff:

Some very nice add-ons for my LCD2 - A headphile leather covering for the headband, 2 spare headbands, a balanced cable terminated to XLR, a single ended cable.
Some nice add ons for my Woody Magnums: G-Cush pads, Flat pads and Woo Audio Stand
Miscellaneous parts: Beyer DT770 80 ohm drivers, DT990 600 ohm single driver, a bunch of high quality interconnects for a home rig, an ALO LOD, Ipod Dock, couple small cases, HE5 cable (looks like the thin and silver cable that came with the original HE5)
Certainly a very generous offering by Skylab. While the LCD2 add ons were very nice especially the leather headband given that my Rev 1 has just the stock metal headband, the Grado ones surprised me the most and have made my magnums very versatile, especially since I already have a leather'd up G-cush and some "MS-Ulti" spacers courtesy of stratocaster (who also made and sold the custom magnums to me). Well I hope this quenches the curiosity of those interested.