Bolkar, our trunks can hold a lot, as you know. Just don't put ice cream in the rear trunk (ask Rail26 about this one!).
Use the link here to see luggage that can fit, use the "driver selection online shop link" in the first paragraph:
http://www.porsche.com/usa/dialogue/contactandinformation/porscheaccessories/
The front trunk can hold the bigger pieces.