I have two fly-tots available for rent for your next long haul flight ($15 per week each, price is negotiable for rentals of longer than two weeks). The Fly-Tot is an inflatable cushion that allows your little ones to lay down flat on a regular, economy seat (we also used it in an economy premium seat).
We bought these for a transpacific flight and absolutely loved it. It is still in next to new condition. Not only did our daughter sleep great on it, but we were able to put our feet up on it a little too!
As availability is constantly changing, please contact me to determine if one or both are available for your desired dates.
Current availability is as follows:
1 October onwards (only 1 fly-tot)
3 November onwards (both)