Make a Mini Skyscraper

Be the master of your own universe by making a whole city of mini skyscrapers.
You will need yarn, the means to create a knitted tube (I used a Barbie knitting machine but you can use a spool knitter or knit by hand), Styrofoam block, and an embroidery needle.
 

Using your method of choice (crank knitting machine, spool knitter or knit by hand), create a tube long enough to fit inside your Styrofoam block.

Once your tube is long enough, slide the Styrofoam inside and close the ends.

Using an embroidery needle and scrap yarn, add windows and doors to your skyscraper.