Really depends on what you have and what your style is. When I interviewed at frog I brought 20-30 shoes plus other products I had designed (watches, eyewear, bags, glossy prints of the Icon stuff…) I laid them all out on the table and asked them which ones they wanted to hear about. Made it very conversational. We probably only talked about 5 pieces. It is nice to not have a linear presentation if you can pull it off. The key is to organically work critical points into the conversation and lead them to things you want to focus on.