I bought my fabric and elastic cord on amazon. You can get cord at any outfitter store (falls under pack repair) and fabric stores probably have it too. I bought the kite quality tyvek because it is lighter than the construction grade and seems strong enough for my purposes. If you dont have a sewing machine I wouldnt try to make your own. I used fairly strong nylon thread and seam sealed (dont really have to). I used acrylic ink to dye the tyvek. Walked through alot of mud and nettles and it holds up. Only takes about 20 min to make the pair.
Ok in the first photo the top is on the left. I have elastic cord and cord lock to help tighten the top of the gaiter to my shin. I have loops at the bottom with an elastic cord with cord lock that goes under the boot. Its about as stylish as any gaiter and washes by hand pretty easily. 0.8 oz each.
DSCN0028.jpgDSCN0029.jpg