Easy to make and works well. No sewing required
1 piece of felt (standard size)
Fold your piece of felt in half alone the smaller side
Unfold and make a 1 inch or so cut on the fold
Place string you cut ( I would say about 2 feet.) Use hot glue and fold. Make sure the string does not touch the hot glue. Do one side at a time.
Fold your felt in back in half again. Making sure the glued fold is on the outside.
Starting with the shorter side glue down the two open sides (but not the top with the string)
Use the edge of the scissors push the edges together so u do not hurt your hands.
Once the glue is dry, turn the bag inside out.
Cut and tie your string together. Making sure the bag can close properly.
And volia, you are done.