If you can find anything out there to eat, you're welcome to it.
Then you're welcome to supplies.
"You're probably tired today, but when you're ready, you're welcome to spar with us," Dusty offered.
I'll say again: you're welcome in my bed, preferably naked, though this is good enough for now, I guess.
"And you're welcome for rescuing you, and Katie and your unborn hatchling from the demons and –" "He's connected to your ex-girlfriend."