Since I don't have a male figure ready yet, I made a couple of sex toy models to help me test some deformation in unreal engine.
Included is a model for a dildo and anal beads. They aren't super low resolution, but should be usable.
edit - After waking up and looking at things, i was able to reduce the size of the Analbeads model a bit, and give it a much cleaner UV map and textures. I've reuploaded the model.