My first cup made of a simple parabolic structure, cutting off the base. Maybe someone adds a handle to it?
I made the structure as lightweight as possible, with a wall about 1mm thick. This is enough to hold liquid inside, but be careful not to press too strong on the walls while holding it, because it may break! Printing time about 1hr.

The red bottom (see 2nd picture) is because I changed from red to yellow filament before and wanted to see how it changes during printing.