Is it possible to melt a glass bottle without a kiln? I've seen these cheese plates, art, spoonrests etc. are made of melted glass bottles. Is it possible to melt these in a normal household oven? Or do you need something like a kiln?

If it is possible is it safe and how many hours would it take? Has anyone done it before?
Glass has a melting temperature of around 1400-1600°C (see here ), and most household ovens top out at around 200-250°C so no, you cannot melt glass in a normal home oven.