Marj Bates, Creator of the fabulous Make-A-Knob Kits we sell, also has a wonderful Kit for Topping your lamps! The Make-A-Finial Kit finally has a press companion! The Finial press is very versatile. You can make finials using the Kit, available separately, or you can use the end of a 1/8" mandrel to make a vessel style creation. With a little creativity you could make this bead off mandrel to create a functional Top.
The finished Finial Measures Base to Tip 39mm (1 3/8") and is 24.5mm (1") at it's fattest point. The little base is 13mm (1/2") across and about 7mm tall.