I was thinking that the main pic would be of a baby being BF (it say on the mosaic website that it works best if the main image is a cose up of a face), but all the little pics would be just of babies faces - not sure if the 1000 tiny pics would work if they were each of a mum bfing - I thnk they would be too small and you wouldn't see what they were of.
Also, I think the final size of the 'product' would need to be fairly large (A4? I don't know) - so that you can see each individual picture. So I'm not sure that postacards will work. Have a look at the mosaic link and you'll see what I mean.
Pearhaps a greeting card would work (ie, folded - with the image in landscape, over the whole piece of card, front and back IYSWIM? - So when you fold it flat you see the whole picture), or is there something else anyone can think of that could have a larger picture on it (wall planner, as somebody sugested?).
I think it would really work best as a poster, but who would buy them, and what would people do with them? They'd be great in clinics etc, but its not much of a fund raiser - giving posters away to clinics!
I like the idea someone (Mrs A?) had about having a catchy line about babies of all walks of life having BF in common:
1000 babies have one thing in common.
We were all breastfed.
(Mmmmmmm! Thanks Mum!)
I don't know, advertising probably isn't my calling! But that sort of thing.