I like this. Center a rod attached to the ceiling and aligned with the middle of the mattress. Hang and drape a measurably long length of fabric into a canopy. It gives a tent effect. Kids love that. Plus, you can add and remove on a whim.
To make a canopy: attach curtain rods to the ceiling and hang curtains from them! As an adult, I like openness and minimalism in the bedroom, but as a kid, I fantasized about having a lush canopy bed. This seems like a great, not-too-expensive way to create a dream bedroom for a little girl. or a big girl, like me.