Bottle design for a plastic bottle company

We need you to design us a P.E.T.(polyethylene teraphtalate - the water bottles that you drink out of) plastic jar (110mm neck diameter) that has a unique modern look and that has economical advantages (for example the latest trend is to make lightweight plastic bottles to save the environment from plastic waste). The design needs to be very attractive while using less plastic material. In order to achieve that, you need to avoid flat surfaces, but rather use some different shapes in order to increase the strength of the bottle. You can take a look at the many PET bottles that you drink your water from for some examples. The jar will have 110mm neck diameter, and the volumes of the bottles will be from 1000ml to 20 liters. All the volumes will have the same design in a scale. This is a serious project, if the winner of the project does a great job, there will be a great cash tip! You need to use Siemens NX (preferred) or other design software that can export to Parasolid format.