This is a color poster that is intended to be printed on 13" x 19" paper (which fits many printers/copiers).
This poster shows, in very simple terms, what digits are significant. It uses four basic examples to get the point across (focusing on whether there is or is not a decimal). This is intended to be seen clearly across the room.
I offer another poster that is similar, but explains Sig Figs with a little more detail with more examples. I show both posters side by side in my classroom.