The second method is simpler.
A clear milk bottle, a skein of thread, an old, old cologne, matches and cold water were taken. I wound the thread thickly in the right place on the bottle, moistened it generously with cologne and set it on fire. Rotating the bottle around its axis parallel to the ground, he waited for a while and splashed water on the flame. The bottle burst evenly, evenly, and so, without much effort, I got a wonderful transparent glass, which at the same time looked like a handmade vase. After some time, a variety of candlesticks, a glass for pencils, and, of course: a handmade vase appeared in our house!
