O goodness great idea...for someone with arts and crafts skills.

LOL I wouldn't even know where to start. Where would I
buy the leather? Can I order it online? What could I use to decorate it or maybe make it a little more unique or nice. Do you have a pic of yours? I already have gorilla glue so that's a good start but as for everything else I'd be lost. LOL If you knew a good place for me to get the leather and maybe accessories I might consider trying. Thanks.
I got my leather at Michael's, an arts and crafts store, a square foot for about 7 bucks... and they had several colors and textures to choose from.
Let me see if I can describe the process that I did, that might help you (the instructions are for the Grand, but it wouldn't be too hard to adjust for a Woodvil):
1. Take a piece of paper, and lay the grand on it. By rolling the Grand over the paper, you can make an outline on the paper so that the pattern you're making completely surrounds the unit so the arms overlap a little on the backside.
2. Then return the Grand to the middle of the pattern where you started, and roll it down towards you to define the piece that will go over the bottom and up the back of the unit. Let it go a little longer like you did with the 'arms', you can trim it down when it's all assembled.
3. When you're done, you'll end up with a big 'T' shape outlined on the paper that's the right size to cover your Grand with the arms overlapping on the back, and the bottom piece folded up to cover the overlap of the arms. This is your basic pattern.
4. Trace one more rectangle elsewhere on the paper that's the height and width of the Grand. This piece will be sit between the Grand itself and the folded-over arms on the back.
5. Time to cut. Cut out your pattern on paper, and use it to cut out the two pieces of leather - the big 'T' and the single rectangle. If you're feeling brave, you can try to cut out the squonk hole by laying the door from the Grand on the 'T' where it will be once everything's put together, and cut the hole using the squonkhole as the guide for your knife. Me, I cut the hole afterward, but that's because I don't trust my approximations.
6. Time to assemble. Lay the Grand on its face in the top center of your 'T', and put the single rectangle on the Grand's back, fuzzy side down so you have the smooth side facing up and ready to receive the arms. Wrap one arm tightly around the side of the Grand and line it up so it's all even. Cut the end of the arm off so what's left goes right to the middle of the Grand. Holding that arm in place, fold the other one around the other side and cut it so it'll .... right up against the one you're holding down. Now one at a time, lift the arm and lay down some glue on the rectangle, then smoothly put the arm back in place. Do the same with the other arm, and you'll have the Grand wrapped on the sides. At this point I carefully turn the whole thing over and press down, so the glued arms get mashed flat onto the table. Hold for 30 seconds to let the glue dry and set. Now turn it back over, fold the bottom piece up and make sure it lines up nice, then glue it down in the same fashion. Once again, roll it over and press down for 30 seconds to set the glue. Now you can trim any overlap from the bottom piece.
7. If you cut your hole earlier, you're done. Slide the Grand out and let the leather jacket dry for a bit more and you're good to go. If you didn't cut your hole earlier, slide the Grand out, take out the bottle and wrap the tube with a paper towel or something to prevent dribbles, put the door back on, and slip it back into the jacket. Using an exacto knife, VERY CAREFULLY cut out the squonkhole using the hole in the door as the guide. Once done with that, put it all back together again and you're finished.
There's probably a better way to do this, but that's how I made mine.
Here's a pic of how mine came out.