|Maybe I need some travel slippers for my next flight.|
2. Fold up the armrests, maybe - This isn't possible to do on all airplanes, and you might not always want to have your child sleeping in your lap or on your shoulder, but sometimes this can help make you and your kids comfier when you're seated together.
3. Recline your seat, carefully - It's usually comfier to recline your seat because you get a little more space and a better sleeping position. (It also reduces the risk of your head slumping forward and your mouth falling open while you're asleep...) Check the seat behind you before reclining though: if the person there is just receiving their drinks, it might not be a good time to push back!
5. Wear layered clothing - The temperature on board airplanes often seems to vary between too warm (when you're on the tarmac), and a bit too cool (when you're in the air). Wearing a short-sleeved top with a sweater over top makes this easier to handle.
6. Remember to bring your child's comfort items - Bring any particular items your child usually has in bed with them when they fall asleep: soothers, blankies, stuffed animals, whatever. Maybe a favorite book as well. This can definitely help your child relax and feel comfortable enough to fall asleep on board.
7. Pull down the window shade - Blocking out any bright sunshine can help you and your kids fall asleep on board.
8. Keep items you need frequently, close - Any items you know you will need during the flight: water bottles, snacks, head phones, music players, and so on should be kept in the seat pockets, or in hand luggage stashed under the seat in front of you. Getting up to dig things out of the overhead compartment during a flight is doable, but if one or all of your kids are sleeping when you need something, it's a lot easier if you don't have to get up.