Roof tile, 1x2x2/3, cheese brick with stud, Universal Toy Bricks (UTB)
You don't like to use SNOT techniques to build your creations? How to make a cheese brick onto your wall? Right, not possible. And what's more; you cannot add this brick to your wall still having the possibility to add some parts to it. The solution for this is already a long time on the market, but Not in a 1-stud-wide way. So here it is, for your full satisfaction. By the way; I added the 2x2 and 2x3 versions for you either.
For much more bricks:
www.brickgenerate.com