How To Use Swatches: Patchwork Headband

If you have swatches you might wonder how to use them.
First, I have made a belt of my swatches. But one of the knooked pieces looked really bulky because of its stretchability. So I had to replace it or to use its bulkiness.
Now, you can see the bulky piece in the front of my headband - it is the red one.

How to join crochet pieces with whipstitch:
http://www.dummies.com/how-to/content/how-to-join-crochet-seams-with-whipstitch.html

How to knook:
Knit Stitch:
https://www.youtube.com/watch?v=freepnfPpws
Purl Stitch:
https://www.youtube.com/watch?v=dyGUvLnCDcU

These are the pieces which are still left over:

Any idea what I could make of them?
How to crochet a waffle stitch (the orange one in the left corner):
https://www.youtube.com/watch?v=WLzUBne0ipU

How to filet crochet (the yellow swatch):
http://www.craftsy.com/blog/2014/05/how-to-filet-crochet/
https://www.youtube.com/watch?v=qbI9e53n-Rw
How to crochet a loop stitch or fur stitch (the green piece):
https://www.youtube.com/watch?v=V-gpIT8gkss

Some impressions of Salzburg, Austria:

And this is the cap which I have already described here:
http://crochetcreative.blogspot.co.at/2014/01/can-you-already-guess-what-my-newest.html

Of course, I would love to see photos of your creations, if you were inspired by my post!

Have a nice day!
Dietlind