Chalice
thingiverse
I crafted a goblet on my own during class rapidly. You should easily be able to 3D print this without needing any additional support structures.
Download Model from thingiverse
With this file you will be able to print Chalice with your 3D printer. Click on the button and save the file on your computer to work, edit or customize your design. You can also find more 3D designs for printers on Chalice.