I try not to think about how much I would pay for a copy of Hilde Krüger's 1924 children's book
Der Widiwondelwald. Some links (in German):
one,
two,
three -- see the full book as smaller images at the last link to the kibook blog.
[Update: this was briefly in print last year --
might still be able to find it.]
I kept coming across this book when working on my
Kinderbuch series over the years.