Came across these the other day:
jet-kids.com/
and wondering if anyone has any reviews / experience of using them? We are flying to Oz from London later this year with DCs aged 5 & 2. We're flying direct and economy so I am wondering if these might be worth investing in to help sleep....the only thing that puts me off is a.) the price and b.) that when you're there you've got to lug them around everywhere. We will be doing quite a lot of travelling (mostly by car) but I can see them being a bit annoying to carry especially the one the 2 yr old uses (5 yr old would probably pull her's at least part of the time!)