DP and I have just been away and after getting up at 3:30 am for our flight home, I just wanted to sleep on the plane. But my neck kept flopping forwards and waking me. So yesterday I bought a neck pillow and DSD who's 5 got it in her head it was hers. I thought I'd look into one for her for long car journeys (even though she sleeps amazingly) but some Google sources suggests it's unsafe for small children. Is it safe? I don't want to put her at risk, especially when she's such a good sleeper anyway!