Daysforgirls.org is a non-profit that supplies feminine hygiene kits for girls in underdeveloped countries. The purpose is to reduce absenteeism from school during girls' menstrual cycles.
The non-profit accepts partial kits, so it is easy for a group to specialize in whatever part fits its resources. They have sewing specifications for a colorful cotton drawstring bag to hold the supplies, pads made from flannel, and panty shields to hold the pads (made from cotton with a PUL waterproof inner layer).