My little sister is in the Ecology Club at her middle school and she recently told me about these water purifiers called"LifeStraws"that they are trying to get people to donate to third world countries. The LifeStraw Personals are basically water purifying straws that people can use when they drink to prevent diseases transmitted through contaminated water . Besides the personal straws, people can also donate a LifeStraw Family, which is an "instant microbiological water purifier ".
More information about LifeStraw can be found at: www.vestergaard-frandsen.com/lifestraw.htm
(The website also has other products aimed at fighting disease)
If anyone is interested in donating, let me know!