Angel food takes great skill and would show your abilities as a baker. Another good classic is the pound cake, easy to make but can show your skills playing with flavors (Coconut, Lemon, or Pineapple). My grandmother used to make a great Cherry angel food cake...with real cherries in it! Don't know how she did it, because mine always flops when I add anything. Then there is the classic Victoria Sponge...I like it filled with a homemade jelly and simply frosted with powdered sugar.
Stained glass cookie:) get your sugar cookie dough rolled out then but 2 cookie cutter one smaller than the other. First you cut out your big shape then in the center of that you cut out the smaller one. Take 2 jolly ranchers and place them inside the hole and bake:) beautiful and diff