A friend of mine asked if I could make her some food/water dishes that were in the shape of Harry Potter's glasses, with the scar. This is what I came up with. It turned out rather nice, and her new turtles are enjoying it, even though they are not grown enough to reach the top.

Each Bowl has an ID of 3", and is 1" tall. You should be able to scale it to whatever size you need/can print.

Print instructions

Supports: No

Resolution: Doesn't Matter

Infill: 100% (So it's more Water Tight)

Notes:
I switched the Filament after it had finished the base area, and started the Glasses only. That way the glasses would stand out from the bottom of the dish.