I remember building a crappy, but extremely dangerous (to the user), Gauss gun out of a stack of discarded disposable cameras, when I was much younger. I remember pulling out the capacitor and the charging circuit was pretty easy, and you just hook them all up in parallel, connect to a stack of AA or D cells in parallel. Still amazed I never died from doing crap like that. Definitely vaporized a few sections of skin and lit sections of my hair on fire a few times :)

I recall repurposing the Gauss gun as a tiny "handheld" EMP that would vaporize a section of wire. Made a Win95 thinkpad (ancient now, old then) do funny things.

I guess some clarification on the word "tase" is required. In my case, the shock threw me back some distance – I won't give in to hyperbole and say "threw me across the room" but 'twas nothing like the gentle tickle of 120VAC or the throb of 230VAC.