There are a couple of different sets that occur to me. Assuming that my lovely wife of nearly 23 years isn't invited, or that I'm single...
Set 1, along the traditional lines:
Yavanna -- there would never be a problem growing food.
Samwise -- Good comradeship and storytelling, aside from the fact that he's an excellent cook.
Arwen -- For the "other" kind of companionship.

And a Palantir, hopefully one with a wireless-internet connection.
Set 2 requires only one person and one object:
Cirdan the Shipwright -- for obvious reasons
The Party Tree from FotR -- Cirdan can't be expected to make the boat out of nothing...