I can't remember when I decided that Wallachians and Moravians were needed for my Ottoman force. Possibly the very moment I saw an illustration in an Osprey that looked like an easy conversion from the Gripping Beast plastic Arab cavalry. Whatever the order of events I subsequently discovered that although generally despised by Ottoman commanders, the Moldavians and Wallachians were mustered for quite a few campaigns and can also be rebellious subjects fighting on the Russian side.
The conversion consisted of just tall vaguely cylindrical hats from Greenstuff or Procreate putty. I also added pistol holders to the horses from Warlords ECW cavalry and one rider got an ECW arm firing one of their pistols. The majority of the riders were given bows and scimitars to befit their outmoded irregular status. I also tried to create a couple of vaguely eastern boyar style helmets. Not terrifically successful, so I hid one under the arm of a cavalryman who apparently likes the wind in his hair (although he has no hair to speak of...)
Bigger pic here
The standard was a Web find of an earlier Moldavian banner that I liked the look of. It has the advantage of not being sycophantically Turkish, so will work for rebel contingents too. In game terms these are probably low quality light cavalry. They were often lumped together with the Tartars although wont be as capable.
I have enough of the figures to make another 8 of these. If I run out of other cavalry to paint, or need to bulk out the Russian army on the Pruth River, I may do another unit with different hats and call them Wallachians.