Here's an easy one, very popular at camp and bake sales:
It's called Trash (although a lot more appetizing than the name suggests)
Get some Chex cereal. NOT Chex Mix, because Chex Mix has chips and those puffy things in them. You can still add pretzels, though. Melt some chocolate (dark or milk, whatever you prefer) on the stove until it is almost a fluid. Do not make it too gooey or it won't stick. Pour the chocolate on your Chex Cereal after putting it in a bowl. Mix it up so the chocolate spreads to almost every piece. Add powdered sugar if you want. I prefer the powdered sugar
Let it cool so it is hard and the chocolate isn't gooey anymore. Now enjoy!!!