creecher
Such is Life - Ned Kelly
The best thing to do would be to find them. You could pass something metal, like a metal ruler, over your carpet, as they are magnetic, though fairly weak, so I guess if you can't find them by looking, the ruler trick isn't going to work neither. Maybe they didn't fall onto the floor and you're looking in the wrong place. It could have attached itself to something metallic as it fell.