If you’ve fished for a while, chances are somewhere in your fishing rig there are flies impaled in the upholstery. Of course, a few of these flies inevitably have barbs and are there to stay. Now, if you want to be like Big Cliff and decorate the F-150 that way, that’s fine. But a better alternative would be to get yourself a Head Liner™.
It fits on all visors and can be easily removed.
The slotted foam securely holds all flies. Add a push pin and you can also temporarily attach those items (to-do lists, parking citations) that aren’t really important, but that you may want to keep.