Who says that a room full of owl decor is only for kids? Keeping the overall theme neutral with just some color to pop, having an owl-themed bedroom in minimalist touch is fully possible. Use corresponding pattern that goes with the owl, like forest, or night related (moon, stars), but keep it not too crowded. Hoot!
This picture collection is not intended as ads (well, except for the one which I made, lol), I simply found them and happen to like them. But in case you need the source, here they are:
Where I find the photos :
1. Owl Lit Up Lamp
2. Owl Bedcover
3. Owl Printable Wall Art
4. Owl Eye Mask
5. Owl Rug
6. Owl Switch Cover