Andy goes equine.
Among my Mexican forces for the Maximillian Adventure I have some dismounted Irregular cavalry, to represent these as Mounted Infantry in “The Men Who Would Be Kings” games I wanted some rider-less horses. I eventually found some Sash & Sabre ACW Union horses (and holders) at Colonel Bill’s. Not ideal as they are uniformly equipped, but they’ll do for my purposes.
After cleaning up any vents and flash and washing in soapy water they were glued to 50mm x 25mm pill bases, 4Ground base render was used to build up the bases and they were undercoated with Halfords grey primer. The horses were painted black or various shades of brown, the latter with an Army Painter dark tone wash. Horse furniture, blankets and saddle rolls were painted a variety of Vallejo colours to give the impression of an irregular unit.
Bases were finished with Banshee brown and flocked, and then matt varnished.