As I was looking for a replacement hose for my Sawyer Mini water filter I found some ideas about how to use the Platypus bags with the Sawyer Mini for filtering and storing extra water.
Buy a Sawyer Mini on eBay here: http://rover.ebay.com/rover/1/711-53200-19255-0/1?icep_ff3=9&pub=5575050939&toolid=10001&campid=5337370094&customid=&icep_uq=sawyer+mini&icep_sellerId=&icep_ex_kw=&icep_sortBy=12&icep_catId=&icep_minPrice=&icep_maxPrice=&ipn=psmain&icep_vectorid=229466&kwid=902099&mtid=824&kw=lg