The Room of Wonders — Sergio Ruzzier

Pius Pelosi, a young pack rat, is a born collector who fills a
room with his marvelous findings, attracting curious visitors.
His very favorite item, a plain gray pebble, is given a place of
honor, which baffles everyone. They all ask why he would keep
such an ordinary stone. Bowing to public opinion, Pius gets rid
of it, but in doing so, he discovers he's lost much more than just
the pebble.

This philosophical tale about a small creature who has the eye
and soul of an artist is brought to life in distinctly droll
watercolor illustrations.