I keep my kids' medical stuff in binders (I seriously need to update them!) ...I would just like to mention that it's nice to have ones that are large enough to fit standard-size papers from dr's appointments- i.e. appt notes, test results, etc... which all come on 8.5 x 11 paper. This binder is 8 ½ x 5 ½. I suppose you could fold in half standard size paper and put it in but I like being able to stick in stuff like that along with other information (I like getting copies of everything... my dd has a 5yr hx of chronic health conditions.)
Here is a great site that has information you can print out for free, and customize for whatever you need for your child's particular needs:
<a target=_blank class=ftalternatingbarlinklarge href="http://www.medicalhomeinfo.org/tools/care_notebook.html">Build Your Own Care Notebook</a>