I just bought this: https://www.amazon.com/Sleeping-Pad-Armrest-Pillow-Backpacking/dp/B075Y3SQ6W/ref=sr_1_4?s=sporting-goods&ie=UTF8&qid=1523369595&sr=1-4&keywords=self+inflating+sleeping+pad+pillow

I have NOT used it yet, but the reviews seem decent. It isn't the most compact thing in the world, but easily backpack-able. Also, it's cheap so if it sucks I won't really care. It'll just become my tag-alongs' sleeping pad. ;)