I volunteer with an adaptive outdoor recreation program, we take both people who have various circumstances ranging from amputations, CP, and even autism out on outdoor trips. While it's one of the most rewarding things I've ever done, I'm also very passionate about it. Consider spending a day or two with a disability agency, talk to a few of the folks there and learn about their stories...most don't require any experience or commitment, and it might do much more for you than bolster a resume.