With GelaSkin's 20% off black Friday sale I finally put together my design for my Kobo and it arrived today:
I've only put the front on so far on my Kobo Original, the back has the the same theme but the thumb logo and DON'T PANIC are bigger (I'm sure it's terribly unoriginal to do a HHGTG themed skin for an eReader but I couldn't resist :P). I'm considering getting a black WiFi one and giving my mom the original which is why I went with black on the skin but I actually quite like the look on the white Kobo.
One thing I'll point out to anyone considering a custom made skin:
they will overlay the button text for the 4 buttons on the left, these will be from the original Kobo so in the case of owners of a Kobo Wifi the "Shop" button will now be labelled "Display". I had actually put in my own text for the buttons (with the Wifi labeling to future-proof upgrading) so I've ended up with my text partially overwritten with their text although it isn't too bad but I thought it's worth the heads up for anyone else.