First, learn to temper chocolate. There are a whole slew of online tutorials on the subject. Learn to make nougat, and to add various flavors to the nougate. Then, learn to make different textures of caramel, almost syrup, soft ball, hard ball, and a couple in between. you will need an accurate candy thermometer for this. You will need to learn how sugar behaves with beaten egg, how adding the right amount of starch, sugar, and egg creates marshmallow creme, etc.
When you've got all this down, you will have to learn how to mold chocolate, or layer chocolate with other ingredients.
Some flavors that would work are berry creams, or berry flavored nougats (blue berry, strawberry, raspberry, even pineapple) with tempered dark chocolate, various combinations of chopped, dried fruits such as raisins or cranberries, fried banana chips, chopped dates, etc.
Then, start combining flavors and textures. Use such things as home made granola, or rolled oats, or various chopped nuts. Add peppers, or cayenne pepper. Only your imagination can limit you. Have fun experimenting. Oh, you might want to invest in a good heat lamp or fondue pot to keep the chocolate soft while you are working with it.
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