The biggest thing missing in adaptive photography is alternative ways to trigger the shutter. And I cant get excited about anything out there thus far.
You can follow my work at www.WorthingtonVisuals.com and www.WheelchairPhotography.com
This photography blog is designed for photographers with disabilities. If anyone has ever tried to find quality adaptive equipment to allow someone with a disability to take photos, then you know how little is commercially available. So I hope to invite any and all rolling shutterbugs to contribute a biography and share with everyone the adaptions you've made to your camera, wheelchair, etc.
If you'd like to contribute, please drop me a note.