What a wonderful, wonderful cause, but I'm afraid ths is not the platform to ask for such worthy assistance.
What I can suggest, is that yourself, and your fellow helpers donate items to you, for you to sell on eBay then use this money to buy toys for the children.
That's what I do, my money from my eBay sales, I send to Kasisi Orphanage in Lusaka, Zambia, where I helped out for 34 years.