Here is a goal: to make a cover for a tissue box

How would you accomplish this goal?

Options are:
[-] Measure the length and width of the box and use a knife to cut a piece of wood using those dimensions. Cut a hole in the center of the wood that will let a piece of kleenex pull through it. Measure the inner walls thickness and using wood glue glue an L shaped block on the bottom of the lid on each corner so that when the lid is put on the box it is snug and will not move around.
[-] Measure the length and width of the box and use a handsaw to cut a piece of wood using those dimensions. Cut a hole in the center of the wood that will let a piece of kleenex pull through it. Measure the inner walls thickness and using wood glue glue an L shaped block on the bottom of the lid on each corner so that when the lid is put on the box it is snug and will not move around.
Measure the length and width of the box and use a handsaw to cut a piece of wood using those dimensions. Cut a hole in the center of the wood that will let a piece of kleenex pull through it. Measure the inner walls thickness and using wood glue glue an L shaped block on the bottom of the lid on each corner so that when the lid is put on the box it is snug and will not move around.