Jolly Pong (죠리퐁)
Sweet and has a slight crunch. American equivalent would be the cereal Golden Crisps. Pour some milk to a bowl and some of these and you basically have yourself some breakfast.
Home Run Ball (홈런볼)
Light fluffy pastry-like outside filled with soft chocolate. Everything just melts in your mouth when you pop this in there. Reminds me of a cream puff. It also comes with different flavored fillings such as banana, cream and cheese.
Kancho (칸초)
Very similar to the home run ball except the outside is harder and produces a good crunch; the inside is still filled with chocolate. As you can see there are also cute characters printed on the balls.
Pepero (빼빼로)
Thin cookie stick dipped in chocolate (the original version). This is essentially the Korean version of Pocky which is Japanese. In Korea there is a day called Pepero Day (Nov. 11th) where people exchange Peperos to show affection for their friends and loved ones.
Shrimp Crackers (새우깡)
Once you get past the fishy smell this crunchy snack will lure you in. There are a lot of snacks that have seafood flavors but this is the staple in Korea.
Onion Ring
Similar to Funyuns this snack has an onion flavor (obviously) but it has a lot smoother texture.
Choco-Pie (쵸코파이)
The classic Korean snack. It's easy to carry around and eat. It has a marshmallow center surrounded by cake and covered in chocolate.
Whale Food (고래밥)
An underwater theme snacked where the chips are shaped like fish, octopus, crab, etc. The fried spicy flavor is more tangy than spicy!