Lighted Beer Keg Table might be a nice way of bringing some ambient lighting in. Save your leftover keg, add some LED's or Christmas lights, have a piece of glass or clear plastic cut to fit over the hole.
Just 3 simple steps: Pour quick-set concrete into the mold on any flat surface. Smooth with a trowel. Wait one minute, lift mold and move on. This mold measures 20 inches x 24 inches x 2 inches, and holds one 60 pound bag of premix concrete.