another exercise I learned from one of Carla Sonheim's classes, is to practice seeing shapes — animals and other things, in the cracks and lines and shadows on the footpath and other places. I think this might be a type of pataphysical drawing exercise too.
collating some of them here — most a "imaginary animals" or "blobimals" as it's fun to draw them, and they seem to be everywhere once you start looking! it's like finding animals in the clouds.
some I've done:
and some shapes I've collected and am yet to draw the "blobimals":
some are obvious, and others less so..