Had a teacher in grade school who said: "Keep your eyebrows up - you can't be angry or sad when your eyebrows are up." Pulls your whole face up and a smile is the natural balance.
I was expected to help wash the dinner dishes, with my sister. I mowed the lawn in Summer, raked leaves in Autumn, shovelled the snow in Winter. And I got an allowance. Grew up hard-working and well-adjusted.
Freya, you're faster than I am. My first thought was 'they are way too polite with their little plaques'. Better would be "Stupid Ass On Bicycle", or "Ignorant Mother."
Watch out! Beavers kill trees - supposedly for making dams, but really just for something to do. And whenever they do make a dam, it creates unsightly flooding, over farmers' fields and people's backyards. Not fun.
Meanwhile, have a look at Heinlein's original book, same title. It's fascinating, and, when I was eleven, I found it amazing. Dragged me into Science Fiction by my eyeballs!
Is there a version that takes, oh, maybe twenty minutes to show 3000 years? This one made my eyes hurt. And the art isn't in any order that would teach anyone anything.