Speedy Charity Hats at Marzipan Knits

Here's a set of excellent instructions for making a "string of hats" for charity:

http://marzipanknits.blogspot.com/2014/03/lightening-fast-baby-hats-for.html

This will really save you time!

Back when Knit Natters did bunches of hats for charity, my friend Barbara would make another "string of hats" pattern with the hats going the other way. 

If you don't mind a gathered top, you could make your strings of hats using circular knitting.