In a developing country I will toss out like $1-$5 bribes all over the place to get things done, get faster service, get extras, etc. Once I bribed a couple cops in Costa Rica, $10 a head, high-rent district by the beach lol.

In North America I find bribing skycaps at the airport is a good way to save money. Several times I was facing $100-$200 in baggage fees and a crisp twenty or fifty made them go away (i usually tip about a quarter of what i am facing in fees).

I also find that if you are trying to use some piece of equipment that is not for public use, like a dolly or a washing machine or something, a quick bribe/tip usually solves the issue. I usually give either 5 or 10 for that depending on the context.

I never bribed a host or a bouncer, I don't know there is something offensive about that to me.