Pick up a mid-century style dresser or desk from a garage sale or thrift store, choose your favourite color palette, and paint each drawer a different shade in that palette. Leave the wood frame as is like the piece above or paint it white.
Violet Blue Ombre Modern Boho Feather Watercolour Painting - Original Modern Art - Home Decor
Inspirational DIY Idea: If you Don't Want To Paint Your Wall(s) in Fun Colors (for example; because You want to Keep Them as Basic Color for Your Room), Paint your Furniture Instead! I like this style, great for a cool boysroom :-D