Hanging objects within a baby's grasp creates a wonderful opportunity to develop hand/eye coordination. He can hit, grab and pull them from the ground and as he gets older he can sit or crawl between the objects. Hanging objects or mobiles also provide sensory stimulation and depending what you hang they can explore a variety of colours, shapes, textures and sounds.
Last week we found a shady spot under a tree and hung some objects with string for Digby to explore. I chose to hang some cane decorative balls that I bought from an op-shop and two fabric baby blocks which talented my sister-in-law made him for Christmas. She posted a great tutorial on making fabric baby blocks on her blog Just For Daisy.
I like to take play outside when I can because it is easy to start feeling cooped up when you've been at home all day. I find the best time to take the kids outside is late in the day or in the early evening when the sun's rays aren't too harsh on their skin or eyes.
Once he had grown tired of looking up at his toys, I sat him up so he could experience them from another angle and the play session lasted twice as long.