Before I got my enlarger I tried cyanotype contact sheets on watercolor paper a couple of times. It's quite nice when the exposure is good (not like these) and it's a fun way to have quick positives without using precious photo paper.
I’m a big fan and this is one of the biggest reasons I got back into film again. When I’m able to see other photographer’s contact sheets, I can get an idea of how they worked through the situation - bloopers and all.
A full sheet of keepers is like a studio musician nailing it in the first take.