In the USA, there were some adverts recently by companies who make disposable tampons and sanitary towels to donate freebies to girls in Africa who would otherwise miss school because of their period... Which is a fine and noble gesture (probably

Goods 4 Girls are sending out washable, reusable pads, which (as they generally have a waterproof barrier) would allow girls to carry on attending school and doing regular activities more than with rags or newspaper, which is what many use at the moment. The aid organisations that Goods 4 Girls are involved with will ensure that the communities where pads are given out have adequate water for washing the pads.
Also, as these pads last for ages, unlike disposables, it doesn't create ongoing dependence on companies and aid organisations to continue meeting girls' monthly needs, and also doesn't create a situation where the girls get accustomed to using disposables and then have to buy them once they have outgrown the school programmes.
You can find out more about the project from their website http://www.goods4girls.org, and also find out how you can help - you could give money directly if you like (through Paypal is probably easiest unless you're in the US), but you can also buy one or more pads (many of the sellers will donate an extra one for every four or so bought to donate; also, some of them are on etsy, where you can use Paypal) or make your own and send them. (As the charity is based in America, atm they want you to send them there rather than directly to the organisations in Africa as this makes shipping, imports etc much easier.)
Apparently demand is far outstripping supply at the moment, so if you would like to donate anything at all, I'm sure it will be much appreciated.
Thanks for your attention.