One example of spectacles cases I have made over the years. This one is from nicely figured quarter sawn white oak. Box joint for strength, because some I made with miter joints exploded when dropped. Too lazy to take a pic of the inside, the finger hole is offset for a dowel with a rare earth magnet to hold the lid on. I used expanded vinyl for the padding on the bottom, since spray-on felt I think is too rough. Made long enough ago that I don't remember what stain or finish I used. 🤷♂️
Size is 6-3/4" long, 3" wide, 1-3/4" high.