Hehe. Yes, it is really messy. And, at least for me, it seems really wasteful. I always end up just pushing the minerals around on the counter.
So.... Today I tried the glass ramekin. It's not like one of those little ramekins. It's round, but flat on the bottom. And it's about three inches wide and about an inch and a half deep. Anyway, this worked so much better than the counter or a lid! I think it even made my brush work better. It picked up the minerals more evenly and even seemed to apply better (probably because it picked up the minerals better). I so glad I thought of this idea.
One thing though, if you use a glass bowl remember that glass can chip. So make sure to check it after washing it or if you drop it, etc. Don't want to get a glass chip in with your minerals! Of course, this is true of anything you'd use glass containers for (which I use most of the time cuz they're just so much better than plastic!)