Hey @4ndy,
Good to see you around here again! What a good project too. Let me know if you manage the small electric shock bit, I think many of us in the community could benefit from such a feature 
There is a project submission contest going on right now for the month of October, if you submit your project to Hackster.io & Instructables.com then you will get a $50 participation prize and your project will be entered for the $200 grand prize 
Submit Your Cayenne Projects! [contest ended]
-B