that a good idea, the companys that make walking and camping gear could do the same
An idea such as this needs putting forward to the company/s in question,I'd suggest a petition of some sort in support of it to be put forward and see what their reaction is,not to put a dampner on it but they'd have to consider those who'd feel they are being forced to donate as well,good idea though and a worthwhile charity for sure...
if someone starts a petition I for one will sign it.