Thai Fisherman's Pants
These are one-size fits-all pants that wrap around and tie with a sash. Very comfy and stylish, too. You can use almost any weight fabric--from silk to lightweight denim. The Thai ones are cotton or rayon. Make sure your fabric looks nice on both sides; I did mine with a contrasting top panel because the print I used for the legs looked ugly on the reverse.
You'll need
2 meters fabric
matching thread
About an hour.
Cutting:

top panel (2): 25 cm x 75 cm
legs (2): 75 cm x 85 cm, with a curved 50 x 10 strip cut away on each side
tie (1): 6 cm x 140 cm
I measured and cut directly on the fabric without a paper pattern. Don't forget to add extra for the seams. I usually do 1 cm all around.
If you're using fabric with a directional pattern, cut the cloth in half widthwise and turn the fabric so that the pattern runs the same direction on both legs.
Construction:

Points:
French seam the top panel sides so there are no raw edges.
Finish the top panel edge with a tiny hem.
Attached the belt securely to the center back of the top panel.

To wear them, slip them on and hold the edges out from you (like a diet "after" picture). Pull one side tight against your body and bring the rest of the fabric across yourself to form an S curve. Bring the ties around your waist and knot. Fold the top down over the ties.
Comfy Pants
These baggy pajama pants are derived from the mompe slacks in John Marshall's "Make your Own Japanese Clothes." An elastic waist makes them really easy to wear. You can increase the width of the leg opening to get a more skirt-like palazzo pant.
This pattern needs to be drafted onto paper, but it's not difficult to do at all. Once you've done it, you can use it over and over, or until you size changes.
You'll need
2.2 meters fabric, depending on your leg length
elastic for the waistband (your waist + 5 cm)
matching thread
a ruler
a calculator
a crayon or colored marker
a sheet or two of newspaper
tape
About 90 minutes.
Drafting:
Measure yourself (it's much easier if you have help with these!)
Hips ________ cm
Waist to floor ________ cm
Crotch to floor________ cm
Around ankle and heel ________ cm
Now lay out your newspaper so that it matches the waist to floor measurement. Tape together if necessary.

Front Leg:
Back Leg:
Same as the front leg, but use 1/3 plus 1/8 of your hip measurement. This allows a little extra room for your derriere.
Cutting:
Follow the pattern, adding seam allowance all around, plus about 8 cm at the top for the elastic casing and 5 cm (or more) at the bottom for a hem.
Construction:
