Does that mirror pictured go above the dresser? If not, you should look into floating shelves! You can paint them the same cute turquoise as your walls, then stack them with Ikea boxes like we did in Daisy’s Lair on Office Goals!
If these shelves won’t fit over the dresser, is there anywhere else in the room they’d fit? If not, try a ladder like this DIY Copper Pipe Ladder and lean it against the wall. You can use it to store a few books, blankets, or even clothes and shoes!