The half shelves were from Ikea, i did butcher a full size shelf but when I went back to get a second Besta I discovered the half shelves. The tumbler case was from https://www.sora-shop.com. I sent them my custom specs for the size and they send it out in separate pieces which you put together. It's very easy and if you leave a screw out its perfect to feed in the wire for strip lights.
Omg this is amazing. Absolutely what I was looking for. If you don't mind can you share dimensions you used ?