Castiel had many hobbies. One of them was trying knots and different things together and making neat bows out of them.

Recently, he's been working with ribbons instead of shoelaces because they were easier and a lot softer. His favorite ribbon color to work with was pink. It was easy on the eyes and softer.

“Hey, can I tie some ribbons on you? I wanna see how I do on something firm,” Castiel asked, holding out a pink ribbon.