Best items to buy at the dollar store?

Compared to other stores like Walmart or target or even grocery stores like jewel osco, what stuff is good to buy at dollar tree/dollar general? To save money.

I saw baking soda for 59 cents. They also sell gum for a lot cheaper than Walmart. They sell one pack of gorilla glue for a dollar but harbor freight sells a three pack of generic super glue for $1.