I sell many different types of earrings at The Tiny Bee and use these Darice bead boxes to keep my stock organized. I got these for around $2 a piece in the Michaels jewelry aisle during a 40% off organizers sale. These sort of sales seem to repeat themselves so just keep an eye out.
I sorted all my stock by earring shape and then in rainbow order ( don’t you just love things in rainbow order?). I attached labels to the side of the boxes and stacked them on a closet shelf for easy access whenever that next Etsy order comes rolling in.