Yes...I did some google searches for general activities to do with children to instill a sense of charity with them. None of the numerous ideas suggested for parents to do had to do with putting money into a church collection box to build new churches and give away propaganda. The activities had to do with donating food and clothing to shelters, working in soup kitchens...you get the drift.
if the WT are designing children "charitable" activities to give the appearance that they are a "charity", then they have a really, really twisted idea of what charity means.
*to add - and what is this about the necessity to be generous towards "God"? Towards the being who they claim is supreme and all powerful? Why would a child be told that God needs money??