You could try different kinds of beans, chick peas, pieces of cheese. If you eat fish, then my two love fishcakes. A tin of salmon or tuna, mashed up with some cooked potato (1 baking potato size), half a beaten egg, a bit of cheese if you fancy and some veggies mashed in too. Make them into little patties, coat them in either breadcrumbs or matzo meal and either fry, grill or bake (take about 15-20 minutes in a moderate oven) - this is a recipe from Nigella Lawson's book 'How to be a Domestic Goddess'. She also does a fish free version called greencakes where you just use lots of different green veggies and cheese instead of the fish.
Not sure about the link to finger food, but you might find some ideas in the BLW sticky posted at the top of the main solid food page.