You can probably send your cash to the whoever the person in charge of T-shirt
and He might be kind enough to send you a T-shirt.
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If you want to design the logo, you can pretty much use any graphical program
you want and save that as a gif file, and upload them to the kids.
Or, you can draw it yourself and then scan it, and save them as a gif or jpg
file.
I think it is a great idea making a T-shirt for kids. Hope someone does a
great job designing it though.
youngshin