At TrendySavers, this is pretty simple and straightforward.
eBay
100pcs Safety Earring Back，Fit with All Type of Earrings，for DIY Making，Jewlery Making (Clear)
Aliexpress UK
Great gift for her. Special design and unique structure. Color: Show As Picture.
eBay
Unique Heart Shaped Ear Jewelry Accessories Earring Plugs Replacement Earring Backs
Aliexpress UK
20 Pair Earrings. Note: Due to the light and screen difference, the item's color may be slightly different from the pictures. Material: plastic rod (plastic needle) + rhinestone. hope you could understand.
eBay
20mm Stainless Steel Blank Post Earring Studs Base Pins With Earring Plug Findings Ear Back For DIY Jewelry Making Wholesale
Aliexpress UK
A softly illuminated halo designed to catch the light with effortless elegance. Quality & Security Crafted in solid,hallmarked 925 sterling silver, these studs are hypoallergenic and nickel-free.
eBay
20pcs/lot 10mm Large Earrings Backs Fixtures Earring Base Posts Stainless Steel Making Supplies Connectors Components Parts
Aliexpress UK
Easy to wear, no need to pierce ears, just open the half ball shaped and clip it on your ears. U type allergy-free clear resin clip on style, light and gentle for ears; with a outwards. it's good choice for you if you don'for t pierce your ears.
eBay
18K Gold Color Brass with Chain or Rod Tassel Stud Earring Back Earring Stopper Jewelry Making Supplies Diy Findings Accessories
Aliexpress UK
Classic Barbell Design With Shiny Clear Cubic Zirconia Well Inlaid, Delicate and Elegant. Excellent Internal Screw Thread, Firmly Screw on and Flexibly Screw off.
eBay
Minimalist Original 925 Sterling Silver Bling Round Earrings Heart Pearl Heart Hoop Earring Back For Women Fine Jewelry Gift
Aliexpress UK
Color: white, colorful. 20 Pair Earrings. Material: plastic rod (plastic needle) + rhinestone.
eBay
Original Vintage Peridot 925 Sterling Silver Long Hanging Earrings For Women Lever Back Drop Earrings Elegant Fine Jewelry
Aliexpress UK
1 Pair of Surgical stainless steel Fake Ear Plugs. Materials: Surgical Stainless Steel earrings are the Optimal Choice for Daily Wearing, because they are Durable, Rustproof, Hypoallergenic, More comfortable for your sensitive ears.
eBay
10Pcs DIY Stainless Steel Earrings Back Love Heart Dangle Earrings Base Connectors Linkers for Jewelry Making Accessories
Aliexpress UK