I thought this was a cool concept using a super condensed san seriff which looks like Impact and the registration marks. Pretty simple design really but effectively only using type and 2 registration marks.
I found these two hand generated typefaces online. The first one "six degrees" is a little hard to read but I think its successful because of the conceptual connection to protractors. The second one "all work and no play" is created out of hair, Im not sure what the message is if any but it had to be pretty tedious creating this face and it reads very well.