I love these triangular shelves. They are really unique and very architecturally different. They give kind of a cool hipster vibe, but are still mature and break up the lines of the room really nicely.
I created a simple desk out of two sheets of multiplex wood, which I sanded down and applied a natural oil to protect the surface. The oil I used was this one from Dille en Kamille and it worked well in allowing the pale colour of the wood to remain.