A resin keychain is a decorative keychain that is typically made of acrylic and filled with liquid and glitter or other embellishments. The liquid can be water, mineral oil, silicone oil, or other liquids, and the glitter or other embellishments can be sequins, beads, small objects, etc. Resin keychains are made by injecting the liquid and glitter or other embellishments into an acrylic keychain shell and then sealing it with sealant.