make a skill or a beefup for the livinGrimoire.
post a demo and a price in this forum: 25$ to 100$ to buy said skill or beefup
and a walkthrough for using and integrating them.
preferably via fiverr I guess.
a skill : a DISkill for example
a beefup : an upgrade for the mainactivity, like an artificial eye, robotics integration,
a better ear, SMSing, make phone calls, or other such beefups.
in the demo post title add a [for sale] tag