Most official windscreens for lavaliers are pricey. Having spent most of my professional life in the business of using, losing, or multilating the little buggers... I have found some inexpensive solutions.

For less than a nickel each, you can make a good replacement foam windscreen from electronic cleaning swabs and cosmetic/make-up swabs. Essentially, these are just a foam (pouch) on the end of a stick.

Pull the foam heads off of the stick, and then slice open the base just above where the stick originally protruded. What you will now have is a foam pouch that can be pulled over most miniature lavalier mics.

If the white or yellow color doesn't hide well with wardrobe, then just use a permanent marker pen to change the color. NEVER use a water soluble pen, for obvious reasons.

You can feel free to wrap the windscreen with sticky triangles or moleskin as part of your rigging techniques, without fear of destroying a twenty dollar hunk of official OEM windscreen.

For hi-wind conditions, try this technique:

Wrap the head of the lavalier in some porous cheesecloth or T-shirt material (gun cleaning patches work great), so that it looks like a Mummy's thumb.

Next, get some inexpensive woman's or child's simple knit gloves. Size small. Unlined. Roughly around three dollars per pair in the cheap discount stores. Snip off the finger tips.

Pull the knit finger tip over the swadled lavalier.

The knit tip and the cheesecloth act almost like a zeppelin windscreen. And the simple pastel look of the knit tip appears professional on camera.