here's an idea,
why cant each one of u form a group in your local district of about 5-20 ppl (as many as u can gather)
then u can make and sell bookmarks,paperbags and other handmade stuff or even lemonade or homemade cookies..
u'll can also put up donation boxes at public places(first get permission)
u'll can even have a garage sale with stuff which u don't use anymore
then, with the money, buy books,toys and other things u think orphanage ppl will use.
plan a visit to a nearby orphanage
the local group u've put together can even put up a performanceor something for the prphan children
visit them often,make new friends
u can even take permission from your teachers and tell your entire class to contribute...put up fliers and gradually increase the no of ppl...
if u have any problems or queries while trying to do the above or have any more ideas or suggestions...please do tell me!!