Two days ago we received a beautiful "Edible Arrangement" from my sister-in-law. Today I took it apart and made the remaining fruit into a fruit salad, but I kept all the plastic picks that the fruits were on, as well as the basket. The basket has a plastic liner that they had filled with Styrofoam. That was covered with curly kale, and then the fruit picks were inserted. You could use the longer bamboo skewers, too. I think that this will be easy to do for a buffet.
Along the same lines, a while back I was at a party where the caterer had covered a styrofoam ball with picks of cubed cheese. It was an elegant and easy way to serve cubed cheese.