First flight with our baby, Chennai to Hyderabad for a family function. What did you carry on board?

It's a one hour flight, which my partner says is nothing. I have packed for a week. She's crawling now and does not stay on a lap for longer than four minutes. Things I'm unsure about: do I feed her during take-off and landing or is that a myth, can I carry boiled water for formula through security, and do they even offer the bassinet on short flights? Would love to hear from anyone who has done this route with a baby under one.