An Introduction Module set in Sunndi; Living Greyhawk Adventure
From the introduction:
Spring is a good time for fairs, markets, and similar festivities, even for the sober dwarves. All winter they have worked in their forges to create metal marvels, and now, they bring their creations into the light, for sale.
N.B. [characters] who already played the Mini Spring Cleaning can not participate in this scenario.
For new characters.
See also SND4-01M: Spring Cleaning