“That wand’s more trouble than it’s worth,” said Harry. “And quite honestly,” he turned away from the painted portraits, thinking now only of the four-poster bed lying waiting for him in Gryffindor Tower, and wondering whether Kreacher might bring him a sandwich there, “I’ve had enough trouble for a lifetime.”
One of the very last lines of the last chapter of the last book is Harry wondering if his slave would make him a sandwich.
I wish I was kidding.