That is very cool looking! However, there is a lot of wood and even plywood that can be bent amazingly far if very soaked and then forced to bend. Basswood is the most flexible I found though it cannot be varnished as would be the case with PG wood. I would seal the wood in a plastic bag with an excess of hand sanitizer and leave for several days, and then slowly force it to the shape desired and let it dry, Once dried it will keep that shape.
At one point I made a lot of these lamps with a 360 degree bend.