Surely you can spare a fiver? 

I know , there are many worthy causes asking for your fiver . I'm not going to say that this is necessarily the most deserving (although I think it's pretty wonderful); if you give your fiver to another charity - pretty much any charity - then it's a deed well done . But, if you are convinced to give and don't have any special preference of charity, please give to this one, if only so that you're giving at all. 

If you genuinely don't have a spare fiver, and want to do something that isn't giving money, please share this request with those you think do. Also, let me know, and I will donate on your behalf. Good intentions might as well count for something tangible, too.