Is this a cup? Planter? Pen/pencil holder? I'm not sure, so I gave it a generic name. It has 7 sides with filleted edges and a rounded (not flat) top edge. The STL file is 109mm high but the part is easily scaled to whatever size you like. As is it printed in 11 1/2 hours at 0.200 mm layer height.

The next version will be a bit more interesting (hint: wiggles!)