I'm always amazed at the inventiveness of members of this forum! Great ideas folks!

We use colored binder clips, clipped onto the tub edges to tell us at a glance something about the snake within. Blue clip means the snake is in shed. Black clip means the snake refused to eat last week. Yellow clip means the snake needs watching (might be something like it tends to have poor sheds or whatever, basically means check the notes in the snake records on that one). Red means the snake tends to bite first, ask questions later. Green is this tub is a breeding in progress.

Really helps as we get more snakes to have a quick visual reference when you scan all the tubs.