This page shows the different variations of the Butelka mleka from an Icons8 icon pack. Feel free to resize and recolor the icon, and then download the icon in PNG format for free. Icons are available in PNG and vector.
This icon looks just like an old style glass milk bottle. The base is made of a rectangle with rounded corners that tapers to a narrow neck. On top of the neck are two circles meant to represent the mouth of the bottle.