Has anyone bought travel neck pillows for their DCs? I am thinking of getting one of [[http://www.amazon.co.uk/Hengsong-Childrens-Travel-Pillow-Coffee-670327/dp/B00JQ1DSGC/ref=sr_1_2?ie=UTF8&qid=1426971798&sr=8-2&keywords=children+neck+pillow these]] each for mine for a 5 hour evening / night time flight. I wasn't sure on the sizing, dcs will be 2 and 4. Or any other recommendations out there?