There is pets mod available for phpfox v1.6 but we are using a site using v2.07.
you can read more about it here
[url removed, login to view]
It dosn't have to be complex as that, basically each member is able to purchase each other as pets, using activity points.
We need this for our site to boost the activity, you need code this as a module and not modifying core files, you need to be skilled with phpfox and get this done, payment will be given upon completion of project.