1 Big one, tried it with 3 random sized ones and only annoyed me.
1 big Goose feather pillow=

.
Can put it vertical when watching tv, lay back a bit if I want it higher, or stay ''just on it'' when I want a thin pillow can even fold it double if I want it extra thick

.
I like a cold blanket at night (unless it's really cold).
Me too, I can't stand blankets, at night they're always way too hot and I turn em over nonstop/ move my feet to a colder place in em.
Yet in the mornings, I'm always cold under em (or well, not in the summer, but in the fall, winter and spring yes)

.
Can't stand rubbish foam though, foam collapses way too soon ( loved it at first, but was completely rubbish after 6 months of use) and cotton is just too hard.
Feathers f t w, they stay nice and soft yet not too soft like the collapsing foam for years, the pillow I'm using is one originally from my grandma.
Down feather is very nice too

, but it's been ages since I've had one, I destroyed one while I was De-dusting it too hard

.
Other synthetics are usually too hard.