Office nook with bench for master bedroom. Built-in shelves. Prefer the shelves to start a little higher above the desk area so as not to interrupt the space for the computer. With or without bench is fine. Without bench, desk can be extended.
I am doing this with Little P's room. The higher one is going to be his clothes and the lower one will be toys and books. They aren't going to be that high (The clothes will be a little higher so he can't reach them)