The best beads to find are the cuff with the loop. Thee beads are great for adding beads and shells I have added a few pics and sites because you can't get them anywhere.
$7.99 for a pack of 4
22 kt Gold plated pewter 6mm hole (great for mos size locs) $1.89
http://www.themysticalgardenpath.com/servlet/the-8445/12-Antique-Silver-Swarovski/Detail I really like these 7mm round with loop $3.99
http://www.beadaholique.com/p-18196-fine-silver-plated-pewter-large-6mm-hole-twist-bail-beads-fit-pandora-2.aspx 6mm hole $1.89 for 2
If you are unable to purchase the cuffs you can always make wire coil cuffs and attach beads and shells. HAVE FUN