Don't put away those needles! (I'm talking knitting, not hypodermic.) Just 'cause it's hot out, and just 'cause you don't have air conditioning doesn't mean you should just put away your needles and not make anything until it gets cold again. There're tons of places with A/C in this city where you can sit and knit and have a refreshing iced beverage and make a cool hat for a chemotherapy or burn patient. Headhuggers has free patterns and they need lightweight, cotton hats for adults and cool hats for kids.