Cuffs are small earrings which are clipped on to the outer edge of the ear and do not require pierced ears. They can be sold in pairs or single pieces.
Crawlers are ideal if you like the look of lots of stud earrings, but don't want the bother of having to put them all on and off. Crawlers give the effect of having several stud earrings at once. Crawlers also go by the name of "climbers"