I've been at enough weddings, been a best man and work in the events industry for the last 15 years.
We can brainstorm through Fiverr or even book a Skype chat session for either 30 minutes or 60 minutes.
It would be helpful for you to have any relevant info in regards to the groom. We don't want to plan anything that goes against his wishes. It's about creating a positive everlasting experience that the groom and his friends will talk about for years to come.