The bats where made using a press mold of spares from the Reaper Miniature Bat swarm. They only have detail on one side. They were suppose to be apart of the Shaman conversion, further emulating Drughaz, but it wasn't going to happen without the goblin looking awkward and even messier.
Sculpy iii was used to make the molds. I used Vaseline (petroleum jelly) so the GS wouldn't stick to the mold. First time using Sculpy and it seems cool enough, easy to use, simple to set and all that. Looking forward to sculpting a figure with it because it doesn't set until you bake it.
see the finished Goblin conversion here.