I'm not sure how cunning the plan has to be... I don't do anything illigal anymore but you can make some pretty neat stuff out of household(loosly using this term here) items.
I think the happyness really comes in when you watch major chemical changes in substances like when you've syntesized magnatite from PCB etchant fluid(a green/brown liquid) then you add ammonia(clear liquid) and suddenly you have a black solid.
It's fun to do this kind of thing and have it work, especially when the eventual end result is something cool.
I don't make bombs yet since I'm still on probation (and don't want to loose any limbs) LOL
Oh!
And happyness is taking your car to a mechanic worried that you're going to need a new clutch only to have them fix it in 20 minutes and charge you only $40.
