H'okay, this is pretty trivial, but I feel fancy using one of these.
I may not have a Provari, but at least I look like a veteran when changing cartomizers.
It seems the preferred method to remove those annoying white plugs from the top of your cartomizer... these:


...is to use a bent paperclip. Well, I offer you a flawless solution I've thoroughly tested for weeks now, with no bad results.
It is...

^ one of those things. The hook is invariably the perfect size to put through the hole, angle slightly and pull out.
I found one in my apartment drawer and realized it fits perfectly. If you have one, try it. (It is a 'privacy door emergency key'). If you don't... go find one at a hardware store for about a dollar. Its like having a Ferrari keyring. 
I know. Trivial. You still read it.


...is to use a bent paperclip. Well, I offer you a flawless solution I've thoroughly tested for weeks now, with no bad results.

^ one of those things. The hook is invariably the perfect size to put through the hole, angle slightly and pull out.
I know. Trivial. You still read it.