To be honest, I've kind of given up on comfort items; A few deerskin for a rug, enough wood for a lean-to for the workbench, bed, and chest... maybe a chair made from a few finewood "borrowed" from the boat materials (because don't leave your boat unattended), and you've got enough comfort for 12 minutes of rested, which is plenty for a commando-style dungeon raid, if you build it just outside the entrance (up an invincible tree, if in the swamp).

Don't forget to pick up rocks, sticks, and resin on your way from wherever you landed to the dungeon itself so you can make your campfire, and a few torches to keep critters away from the house while you're gone.