You can add other flavors to these, too. For example, maple pecan popcorn balls, or coconut marshmallow, or–if you’re feeling particularly young–red hots and pop rocks.
2-1/2 qts. popped corn (keep warm at 300 to 325 degrees)
1 c. sugar
3/4 c. water
1/4 tsp. salt
1/4 c. light Karo
1/2 tsp. vinegar
1/2 tsp. vanilla
Cook to hard ball stage 250 degrees. Pour slowly over the popped corn. Stir and form into balls. Use fat on the hands if necessary.