xkcd
xkcd is Randall Munroe's webcomic of stick figures, jokes and ideas about science, math, technology and life.
A long-running stick-figure webcomic that mixes science and humor.
The twin towers
Two pointed towers rise from the cloud, and the castle is quite proud of both of them.
The warm doorway
A round, glowing doorway sits at the heart of the castle, so nobody has to knock to be let in.
The little globe
A globe with a golden ring sits by the cloud path. Nim spins it whenever planning a trip.
The lantern
A lantern hangs low by the castle so the cloud path is easy to find after the stars come out.