It is a little zippered bag. Currently using it to hold stuff from my pants pockets at night when I go to bed.
All of our class projects use scrap material. I had found the inner material while looking for stuff for a different project. I could not find anything that would go well with it, but I think it does well with this bag as a surprise lining.
This reminds me of a happy oopsie I made earlier couple years ago.
I put my kids sweater on one of the only lamps with an incandescent bulb in the house. It melted a hole in the back of it like any synthetic material would.
I had some old socks with monster eyeballs that I had been meaning to throw away so I used that to patch the hole. It was their favorite sweater for a couple months because of the eyeball looking out the back of an otherwise normal sweater.