There are a couple of quoins that are hidden behind rocks or shrubs, etc., and you can hear them (bwoop!) when you collect them, but the type of quoin and what you just earned is more of a mystery, esp. if your energy or mood is maxed and you don't catch a change happening.
Can the quoin collection white text show up on top of all the things, or can the quoin collect text be a Local Chat window growl (preferably the former solution)?