As for how to distribute them, you can simply lay a few out in a metal tray. Other options: sew pouches for them or use an old sock, then hang them in inconspicuous areas. Line a basket with foil or plastic and lay the briquettes inside. Or simply set them out on a tray on a shelf or side table: the black little pillows actually look kind of cool!
Be sure to get natural briquettes without mesquite or easy-light additives.
Have you used charcoal to rid your home of odors? How do you dispense it throughout your home?
Image: Sree Engineering Works