Everyone needs a draft stopper.
They are needful and easy to make, and a good project to give some sewing practice.
This is a very simple one I made using the pant leg of a pair of jeans.
I sewed one end (seam inside), filled partly with pinto beans (heavy and cheap), and some quilt batting. You could use small stones, rice or sand in a bag, and rags. Anything that will weigh it down and insulate. (Yes, this one is dirty, they are a couple years old.)
Then I just did a double seam at the other end (the end of the pant leg).
Very durable, next to nothing to make and keeps the draft out!
If you want to have fun with your draft stoppers check out these links:
This one is soooo cute! It’s made with scraps.