This program generates 512x512 px images containing horizontally mirrored icons like this:
It is used internally by Keera Studios to generate random images for mobile Haskell demo applications.
If you like it, star it. As it is used in a very specific environment and it serves its purpose, there are no plans to improve it. However, if you want, feel free to fork it and send pull requests.
Usage:
$ cabal sandbox init
$ cabal update
$ cabal install avatar-generator
$ cabal exec avatar-generator avatar.png