Simplest and best route is to offer to buy supplies for the orphanages involved.
My spouse Vonne suggests the following:
The ideal donations are new, long-lasting clothes like Hanna Anderson, sizes 80-140 cm. Lands' End also has long-lasting kids clothes (to be bought in the same size range). ;)
No winter clothes, just the summer variety.
An important donation to improve the medical diagnostic process would be stethoscopes and/or otoscopes like the Littman Master Classic II Stethoscope and the Pro-Fiberoptic LED Otoscope (Amazon links). 
If you want to help us out, the process would be to buy them directly yourself and ship them to us (c/o Barnett Consulting LLC, PO Box 970, Franklin IN 46131). We'd then carry them over in our luggage on either the early-mid June or early-mid July trips, dispensing them to the orphanages via our highly-reputable agency.
I'll put this post on the FAQ page as well.
Thanks to anyone who chooses to pitch in.