Wait, I shouldn't have replied with "drink", if there aren't any kind hangover-nursing bunny girls. But it's also the one emoticon that fits the most...Your hungover self will never get tended to by a bunny girl...
If you check out the first volume of her sketchbook it's absolutely packed with drawings of bunny girls like you wouldn't believe lolWow, it's so weird to see the author of Otoyomegatari drawing bunny girls... But in a good way, I suppose. XD