I try to arrange my gaming group and environment so I don't need many rules. The only that come to mind for the campaigns I run:
1. Everyone rolls in the open. Even the DM.
2. No extra small or highly stylized dice that are hard for other players to read.
3. On the floor is not in the open. Pick it up and roll again.
In terms for setup, to avoid many of the problems other talk about:
For in-person games I have a used conference table I bought from an ad on Craigslist, from a company that was closing an office. I don't worry about coasters, dice trays, heavy metal dice, etc.
The map area is a verticle TV in a Collabrewate case. I connect it to my laptop for digital maps, or put the Chessex battlemap, titles, terrain, on top of it if going analog. I don't have to worry about dice knocking over terrain or miniatures. Also don't have to worry about spells ruining dungeon tiles or paper craft items.
The one issue we do have sometimes is dice going off the table, but because of how my gaming area is, more times then not that means it is going under the freezer, a counter, or my dog grabs it. It is often a huge hassle to retrieve a die the goes onto the floor so the issue becomes self correcting as the players are careful when rolling their dice so they don't have to get on their hands and knees to fish it out of somewhere inconvenient or wait for my dog to pass it in a day or two.