Water Bottle funnel
My mother in law saves all of her plastic Disani waters bottles to fill up water from her Brita water purifier pitcher.
She fills each one up seperately and it spills over the side while filling each bottle
Why not deveop some sort of tray that could hold 6 to 8 empty plastic bottles and then once in the tray a top piece would lay over the top of the bottles with individual spouts that fit into each bottles spout and the top tray could be filled like an ice tray where the water would flow into the bottles filling them all up at once.
Reward: one of product