There's always the old "stack stuff on a chip" style of appetizer. These look nice, tend to be easy to prepare, are easily held in your hand and can be made with ingredients that don't take a lot of fiddling with. Short of the little parmesan cups, these only take a few minutes to prepare!
The main focal point of this appetizer is the blackberry. All the flavors combined are excellent, and the overall appearance is beautiful, but when you bite into it, the blackberry will crush and will be the first flavor tasted. Make sure you get sweet, fresh and wonderful blackberries. They really make the dish!
I mention chiffonade of basil. It's basically basil that's been cut into strips. You can see the method, here
This dish is calculated for each of the 8 individuals to have 2 crisps, each.