DH just shook his head when I explained what I was doing, but even he admitted that it was "sort of cute in a weird way" when it was popped on a bottle. There are photos of much more creative ones on the Innocent website - it's worth a visit whether or not you get bitten by the little hat bug.
The patterns call for 28 stitches - not sure what size needles or yarn since it's in British English. I used sock yarn with size 2 needles and cast on 30 stitches. I did a coin lace pattern, which seems to be my favorite lately - mostly because I've memorized it. I think it's just barely wide enough. Maybe a dk weight would have been better.
The good ladies at Mason Dixon Knitting are collecting the hats in the U.S. for a big send over to the UK. You can email them off their site for an address.
The days are shorter and the nights are cooler here in New England, but the garden is still going strong.