We did the Seven-Duece game for a couple years. Too many players were losing their stacks chasing that $1 from every player so I nixed it about a year ago.
Introduced bomb pots a couple years ago. At first, it went horribly...completely my fault - I originally thought rolling a pair of dice to determine the bomb pot ante was a great idea, it wasn't. Antes could be as low as $2 per player, or as high as $12. At a 25¢/50¢ it got a little ridiculous to say the least. I changed it to $1/$3* per player and it runs much smoother now.
*I've put a lot of thought into our bomb pots - I wrote it all down
here.
Tried the Nit Game but my players didn't care for it. May try introducing it again since I already have the buttons for it.
No bounties, we are cash game only.
As far as how to introduce them, you just tell your players how it works and then play.