Storage unit under the bed
It's just a giant space, but you could buy some small basket to organize the space (and guess what, Ikea sells those)
Twin Bed frame from Ikea. Oh, and the mattress too.
The side shelf. There is a white board separator that makes it into two level. It's included, but you need an electric drill to nail it to the bar.
Got this from Ikea
The long desk, kinda messy. But you get the idea
Lamp from Walmart