I was planning on doing a tutorial for this but my original plan was changed slightly as I ended up buying the wood from the scrap pile in B&Q. This means the wood is extremely cheap but you also don’t have a huge selection to pick from.
I ended up paying around £2.50 for the wood however I’m not sure exactly how much I spent on the entire project, mostly due to my dad breaking tiles and having to buy more. But I am certain it was cheaper than just the shipping for most Copic marker storage solutions I have seen online.
I think if I were to do this again I would make the shelves slightly deeper but apart from that I am super happy with how this turned out.