Adding on...

...a hat to go with the rest of the set...

I will try to share the idea of how I made it

without writing an entire pattern.

I started by the neck

and worked in stockinette st (glattstrikk).

With purple, cast on 24 sts 

and work back and forth about 110 rows

(for a larger hat, cast on a few more sts

and work an extra few rows), bind off.

With green,

pick up sts along the entire right side.

Work 10 rows in stockinette st,

bind off and fold double 

towards the back and stitch it down.

Work the back of the hat,

by starting on the top, working down.

With purple, pick up the 20 middle sts 

from the last row before the bind off row, 

on the green folded edge.

 Work back and forth about 18 rows,

then decrease 1 sts in the end of every knit row (rettsiden)

about 10-12 times.

This should take the back side to full length. 

Bind off and stitch the sides of this back piece

as nice as possible to the green folded edge.

For front- and neck edge,

pick up sts and work in Garter st (riller).

Work the neck edge first,

and make 10 holes for the cord, evenly spread.

Then work the front edge.

Remember to make 1 hole on each side 

for the cord (12 all together).

Make a twisted cord, or use a ribbon.

Good luck!