a couple of years ago I stumbled upon a post by someone who had made a tutorial on how to switch decals using bones that he would rotate. So for example, if the bone is pointing up, a smile decal is shown, and if it's pointed down, a sad mouth decal is shown, and then you could have any number of decals inbetween at different angles of the bone. I think the bone was just placed somewhere random, it wasn't necessarily part of an object. The setup may have also included the use of expression sliders. I remember the guy who did the tutorial had an accent, possibly latin american. I thought it was very clever. I know that the always inventive johnl3d did something like this, but the tutorial I'm thinking of was a little more involved and definitely by someone else. Does this ring a bell for anyone? I thought for sure I bookmarked or downloaded it, but I can't find it anywhere. Would love to see that again, as it might be useful for a project I'm planning.