Turn a wine barrel into an outdoor sink, or any other large barrel. Hose to sink or large water jug to sink, sink to barrel, barrel grey water to garden! Raise the barrel and add an outlet drain and small hose to drain grey water.
Lights could also just go from one side of the house to a central thing over the table. Like if I make a chandelier thing, that can be where they are gathered in. We'll see what looks easiest with the house.