This photo shows 2 pair of polymer clay clip earrings as an example of clip styles; dangle style clip earring and an earbob style. (both shown have sold)
The dangle style clip lends itself to an easy conversion of most any dangle pierced earring. Shown here is a G/F earring clip which costs approx $20 for the conversion. Sterling clips cost approx $15 for the conversion.
The earbob style shown here is made of polymer clay and has a nice sterling earclip baked into the clay. These clay earbobs sell for $25 a pair. You can order these in any color scheme you may find in the bead sections.