M.H.
My toddler has 2 pillows. I bought him a "half" pillow at a local high end bedding store where they custom made a down filled pillow for him. It was $50. Then I left it on an airplane, and had to buy another. Grr.
He also has 2 pillows that are "half" pillows filled with natural latex. I think they were about $35 each. I bought them on some organic website. They are organic, do not harbor dust mites, and have no chemicals. I have washed both the down and the latex pillows and they have come out fine. The rubber pillows are sort of lumpy, but comfortable for sleeping.
I see you are in the Denver area - the Brass Bed is the place that custom made the pillow for me.