A shag rug is best. Cushions falls, and prevents small parts from bouncing all over the place.
Guntech, I'd hoped the smilie would indicate my own appreciation of the humor. And tossed in a bit of my own. I didn't see your post as being nasty in any way. But we gotta laugh at stuff like this too!
Ceramic tile would not be good in a place where stuff might fall. But neither would I want a rug of any sort that would hold stains from spills of oil or solvent. And if the area is used for reloading as well? There's more than one story I've read about such carpets causing a fire where normally the stuff it's made from would snuff out or just melt a touch where the dropped flame struck.
Nope, I'd suggest a cheap but easily cleaned laminate floor or vinyl planking. It can be swept and vacuumed easily and effectively and small parts can be seen easily. And if that's too cold on the feet then at most a low pile mat. Something NOT BLACK so when you drop small parts or small gun screws onto the mat they can be seen.