I made these on my laser cutter a few years ago. The lids use magnets to help them stay on. They're cut from 1/8" maple and walnut plywoods. Short demo video here: https://www.youtube.com/watch?v=UjAaykdz8H8. If you have access to a laser cutter and are interested in making some yourself, the files are available for download on my website: https://www.laseredby.me/shop/iroshizuku-ink-box

edit: sorry - when I added the picture it lost the gallery link. https://imgur.com/gallery/xRRRxev