Remote Control Light Bulb Socket, Wall Mount Switch, E26 E27 Lamp Socket, No Wiring, 100FT Range, Wireless Light Switch for Lamps, Pull Chain Light Fixture, Pull String (Shorter Version) - Walmart.com
Pull Chain Sockets - Etsy UK
EFINEHOME Lamp or Fixture Replacement Phenolic Medium Base Light Socket - Pull Chain Switch - 2 pc Thread and Ring, 1/8 IP Thread Cap -2 Pack for DIY Project - - Amazon.com
How to replace a pull cord switch - Fitting or Repairing Bathroom Pull Cord Switches