Let it grow
This is so simple, you don’t even have to lift a finger! All you have to do is set aside an area of grass and let it grow over the spring and summer. The whole point is to allow whatever flowers are there to grow to their full flowering potential before you cut them back. This will provide lots of pollen and nectar for visiting insects; not to mention saving time constantly cutting grass!
If you are worried about tidiness, just add an interpretative sign and maybe even cut an outline border or pathway through to show the intentional nature of your ‘wilderness’. Standby and wait for the parade of flowers from daisies to dandelions, buttercups to clover.