Outofstock designs geometric felt lamps for Bolia Outofstock used heat-compression to shape the two pieces of felt on either side of the lamp. They then sandwiched them together, creating a cone where the two bulging discs meet.
Part-time, photo by Eke Miedaner. From the comments: "Shy clock?" "The clock is two-faced, so you have to take a look on both sides to know the time." (This is an official school-clock in KV Baden-Zurzach).