Here's an example of simple typographic posters that you whip up in few minutes using overprint.
I went the extra mile and decided to create a more lively illustration. I love overprinting because like I mentioned, it offers a lot of potential in terms of colors. While this was poster only uses two colors, it becomes really colorful because of the added third color. I decided to use simple hand drawn squibbles and then digitized them using Illustrator. I then took them in Photoshop in layers, added colors and added smart filters.