Mainly a sleeping bag - same one since early 1970's! (and I got that as a hand me down from former Step-Sister).
Topped up with a couple of synthetic throw overs, one is a very light quilt the other some "clever" synthetic - both surprisingly warm for weight........both bought on the basis that neither would be handed down generations as heirlooms

(but that sleeping bag might be

).
Pillows I am fairly fussy on

I have a couple of (fairly expensive

) camping / travel pillows that pack away small but are still "proper" pillows.......topped of with a real (synthetic) pillow

- but that is about due for replacement, after a couple of years use (I might not be a Cruiser or
liveaboard - but I manage nonetheless to get a
lot of bunk time when onboard

).