After Winkle tries to sneak down the chimney at Tazaar's house, the wizard agrees to let the goblins in.
Get the Matches
Have 
Fingus stand near the rug's head, then switch to
Winkle and click the rug's tail. When the rug's mouth is
open, have Fingus take the matches from the rug's mouth.
Get the Spring Key
Have Fingus use the bottle on the kettle near the window,
then have him use the matches on the kettle. After a while, the kettle will
blow steam, making the letter on the wall fold down. Click the kettle to blow
out the flames, then click the spring key behind the letter to take it.
Get the Big Key
Have Winkle stand on the tail of the rug.
Have Fingus use the spring key in the cuckoo clock above the
mantel, then click the cuckoo clock to turn the spring key.
Have Winkle use the stone on the big key that is
hanging from the bird that comes out of the cuckoo clock.
Take the key.
That is all you can do here, so move the mouse cursor to the bottom-right screen to make it turn into a door, and click to go back out to the fountain, or move the mouse to the top of the screen and choose the wooden sign, then click Fountain to go to the fountain.
Open the Cellar
Have Fingus use the Big Key on the Cellar in the left
part of the screen. Take the wine from inside the cellar. That is all you
can do here, so
move the cursor to the bottom
left corner of the screen until it turns into a door icon, and click to go
to the Village, or move the mouse to the top of the screen and choose the
wooden sign, then click Village.
Get the Sausage
Have Fingus use the bottle on the wilted flowers.
Have him take one, then have him use it on the notable and he will fall asleep.
Have Winkle stand on the square platform in the floor to the left of the
notable. Then have Fingus press the switch next to the notable.
Winkle will be
launched onto the roof. Have Winkle take the sausage.
Then move the cursor into the archway to the right of the notable until it turns into a door icon, and click to go to the Giant, or move the mouse to the top of the screen and choose the wooden sign, then click Giant to go to the giant.