This is the pattern for a TARDIS scarf based on the one available in the Doctor Who: Worlds in Time game.

For the version pictured, you need approximately 250 yards blue and 150 yards white yarn. You can increase or decrease the number of stripes between the doors to change the length of the scarf.

This version of the pattern (revised slightly from the one posted in April, 2012) uses seed stitch and garter stitch to further define the different sections of the TARDIS door and help make the scarf lie flat.