Yi Lighting E17 to E26 Light Bulb Socket Base Adapter Converter - Converts Intermediate Fan Socket (E17) to Standard Medium Socket (E26/E27) (Pack of 1) - Amazon.com
[UL Listed] 2-Pack Light Socket Adapter with 2x AC Outlets
IDEAL Circuit Breaker Finder Adapter Kit in the Test Meter Accessories department at Lowes.com
Medium to Mogul Base Adapter - Edison Lighting Supply
Othmro Light Sockets,3Pcs E14 to E27 Socket Adapter, PBT Plastic AC 100-240V 150Degree Heat Resistant Light Bulb Socket Converter Commutator for Home Light Fixtures LED Grow Light Socket Stand White - Amazon.com
LE E12 to E26 Light Socket Adapter, Bulb Base Converter, Pack of 6 - Amazon.com
Amazon.com: E-Simpo® 10pcs E26 to E12 Adapter A19 to e12 Adapter Medium E26 to Candelabra Base E12 Adapter Standard Bulb to Candle lamp Base Converter PBT CE ROHS : Tools & Home
Leviton 660-Watt Double Light Socket Adapter, Brown 128 - The Home Depot