Okay, i realize this is supposed to be a painting blog, but i thought of this great idea for a table walking to work today and i'd better write it down before i forget about it.
Make a table from a pegboard with holes. Put fibre optic cables down each hole, and bundle the cables at the bottom to form three or four tree trunks. Wrap each cable from top to branch to trunk with a putty or clay. Cut off the excess cable on the top side of the pegboard. Remove the pegboard and the legs of the pegboard table. Put a light source on the bottom of the fibre optic tree trunk. Put a glass table top on the top.
Another variation might be to put coloured glass cups on the top side of each cable strand to form little flowers at the top of the tree.