My current favourite; a pillow fashioned from a bag-in-box winebag. You just blow it up. Can also be used for carrying water.
Collapsible water bottle (chest) and 'pillow' (back) in a homemade PFD.
Collapsible water bottle (chest) and 'pillow' (back) in a homemade PFD.
Comments and current insights: The winebag is not the lightest thing around, but it suits my needs very well. Right size and stays inflated. I have used lighter inflatable 'emergency' pillows but they tend to leak, and inflating them 2-3 times a night became a drag. This pillow also works as part of a homemade personal flotation device (PFD) for packrafting with little risk of ending up in the water; ie not for white water rafting. Needless to say it is not approved by any standardising committee and nothing I recommend is for someone who does not take responsibility for their own decisions and actions.