I have a thing for accent walls. I like to add stripes, or patterns, or a bold color on a single wall to add some interest. Stripes are my favorite, but I will be the first to tell you that an entire wall of stripes is not what I would consider a Simple Painted Project.
I can also tell you that adding just one large stripe is pretty simple. There is still measuring, taping, and levels involved, but on a much smaller scale.