This would be a perfect gift for a geeky comic book loving friend. You can usually find cheap or discounted comic books in comic book stores or you could use speech bubbles from comic strips in newspapers and magazines. Different comic books have different kinds of speech bubbles. For example, Nightmares & Fairytales has beautiful and ornate speech bubbles whereas Harley Quinn has the normal classic speech bubble.
Take a bubble bead and search through some old comic books for speech bubbles that look good as beads.
Make a template that's the same size as the bead and use it to draw around the speech bubble.
Cut out the speech bubble.
Put some glue on the bottom of the bead. I used all purpose glue.
Stick the bead on to the speech bubble and leave to dry.
Cut off any excess speech bubble.
Take your bracelet setting and the glue.
Glue the bead to the bracelet and repeat for the remaining bead settings.