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Also where and how to publicise to people who'd need it?
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Local media and FB. Best way to get the local media interested is to organise a small 'event' to make things a bit more newsworthy.
Simple ideas that needn't take much organising, or money. Personally (because I am an artist) I get involved in, or organise community art events specifically for kids. You then invite all local media and hopefully end up with some good exposure in local papers and radio to get the grapevine moving. FB is actually invaluable and the most effective for spreading this sort of news today.
One example; I am in the process of planning an outdoor art workshop where children will be helped (if needed) to create life size portraits of each other in a small plaza. All finished work will be displayed at the end with parents encouraged to donate to cover costs to take the childrens' work home. I will invite various local charity/non-profit groups to come along, get involved and promote themselves also. All will be actively encouraged to use media contacts and promote using FB. The entire day will cost no more than €200 - fully expect local businesses to cover that. The day should raise enough money to make it worthwhile for participants/volunteers from community groups. But, above all else, it will raise awareness and everybody will have fun. Small stuff that gets BIG results. Nice thing about children is that they don't recognise the same stigmas us adults have been conditioned to recognise - they help break the ice and get the grown-ups talking to each other.
It is easy and effective.