This is my self-developed ashtray,
which is ideal for indoors and outdoors. It has a large capacity and can be covered with an extra  lid.

Although it is advisable to make the ashtray from fireproof material, in my experience it is not necessary for naormal cigaretts(if extinguished). However, if the ashtray is to be placed outside, I recommend ABS or another UV-resistant material.

Finally, I would like to make it clear that I do not accept any liability for fires or other damage, as the fire resistance depends on the material.