The worst, I repeat, the *worst* thing about un-cozy homes is stiff pillows on a couch. You sit down and lean back, but the fabric behind you fails to support or comfort even a fraction of your body.
Fluffy pillows, on the other hand, allow you to sink back, fully supported. When I say fluffy, I basically mean that you buy pillow inserts larger than your pillow cases. This allows for ultimate fluffiness.
Action point: Pull out your fluffiest, comfiest pillows. If you don't have any, buy some.
Bonus tip: Don't get fussy over pillow arrangements, and actually let people use the pillows for something other than decoration (ie. comfort, pillow fights, low poufs, etc.)
This post is part of my 31 Ways to Cozy Up Your Space series.