I use two.
Vault Drop Affordable Jewelry with high-margin potential, shipping from New York. Tons of options from earrings to necklaces and bracelets
Air Waves OnDemand Offers on-demand custom-printed apparel in a wonderful variety of styles and prices. Shipping from Ohio they offer the quickest turnaround and highest quality printing available. They are a big improvement over Printful for those of you with experience.