Idea comes from the lovely Martha Stewart.
Supplies are two paper bags, pretzel rod, scissors, and black tape.
Cut strips in the first bag.
Carefully open it.
Place the second bag inside it. Have it prefilled with treats.
Tape the bag closed with the rod in place.
I trimmed off the top two inches because the bags looked too long other wise.
Great little detail to add fun to the Harry Potter birthday party.