Here's a skill that all teachers should learn: simple board drawings, from the very excellent TeachingEnglish.org.uk. It would save you so much time and save so many trees that get wasted when you print the pictures you stole from Google, who stole them (without permission!) from other websites…
And it's so much more fun, and so much more creative, and if you want your classroom to be a creative space, lead the way!
From the same source, How to draw cats, dogs and birds.
See also 1000+ Pictures for Teachers to Copy