Sing to the tune of Twinkle Twinkle/Alphabet song.

Diggers are my favourite thing,
I like how their long arms swing.
Into the dirt they work so fast,
now I want to see them last.
And they even work at night,
After night they’re out of sight!

Second verse by Daddy:

Diggers are my favorite toy,
I love them like every boy.
I like to go “Vroom! Vroom! Vroom!”
while I excavate my room.
Watch out for the great big arm;
I don’t want to wreck the barn!