I've many many variants of this, finally coming up with a small version with a latch that gave a more satisfying click.

This is one comes with a bit more flair - really pretty in a shiny filament!

Remix of Simple Heart Box with Lid for Thangs Valentine’s Day Contest - https://thangs.com/designer/3dprintbunny/3d-model/Simple%20Heart%20Box%20with%20Lid-638968