I have ten giant glass bottles. I think that most of them used to be old style water cooler bottles. Three are Italian wine bottles which held about thirty gallons of wine - these things are huge. They belonged to my MIL. Now we're cleaning them off and I want to use them as she did - as terrariums. MIL planted small decorative plants in her terrarium setups so she left the bottles intact. I want to plant herbs and vegetables so I need to cut a hole in the side big enough to reach my hand in and harvest the plants. Does anyone have any idea of how to do this? My searches have only produced results for cutting off the tops of bottles. Thanks.