Travel Pillow

If this doesn't look practical, I don't know... Now I just need to find out if you could do it yourself.

https://www.amazon.com/simpletravel-Inflatable-Traveling-Airplanes-Inflating/dp/B077Z8M8RK/ref=sr_1_11?s=bedbath&ie=UTF8&qid=1528485286&sr=1-11&keywords=travel+pillow