Czajnik elektryczny and other 68,000 icons from Icons8 icon pack follow the visual guidelines of the operating systems: Windows, iOS, Android KitKat, and Material. PNG format is free up to 100x100 px. Icons are availble for download in PNG and vector (SVG, PDF, EPS, and more).
This is a picture of an electric teapot that has a small cord in the back. There's a window in the center of it that has little lines for measurement. The handle is in the top right corner, and the spout is very pointy.