Headboard to Bench! Get an old headboard for a kids twin bed at Goodwill. Paint however you like! Then add wood panels and a cushion! I definitely can do this with the headboard I don't use anymore, it can be my own lil project!
Simple built-in to create a mudroom and/or storage anywhere from an entry, to kids room or in a laundry room by adding shelves or a deeper bench for sitting. Put drawers under bench or have the seat lift up to store things.