If you‘re going to be a wholesaler of this kind of special bottle, applying robotic welding arms to your production line is a good way to improve efficiency. There is various high-quality welding positioners for sale in the market. You could have a try.
You can use this method to drill a hole in some glass vases and make a wall-mounted flower holder. A yard filled with these flower holders will create a pastoral atmosphere and is easy to make you think of those quotes for plant lovers.
Here is a video showing how to drilI a hole in a glass bottle: