[Margaret Pilkington]

What about a 'Top Swap'.....this is a bit like a Bring and Buy Sale........you bring along a top or a shirt/Tshirt and you give yours for free and buy one from someone else.
You could make it a big party.........best plan it for a weekend, let it run all day.....and you should make a bit of the folding stuff.
Who knows, you might even get businesses to donate Tshirts......canvas local sportsmen to donate a signed Tshirt...publicise the event in the local free paper.
I hope you do very well in your fundraising...it is a very worthy cause.