The residents of GroovyVerse have created a huge collection of ReadyPlayerMe avatars. I converted them for use in OpenSim, and the vendor distributes a folder with a complete avatar, shape, alpha and all the associated textures.
Anyone is welcome to use or take a copy of the full-perm vendor. These would make nice starter avatars for a small grid. :)
hop://groovyverse.com:8002/Welcome/175/237/39