Sunlite MR16 Blue LED Bulb, 12 Volt, 3 Watt, 90 Lumens, GU5.3 Base, 30 – Bulb Center
12 Volt Ceiling Led Lamp | Plastic Led Spotlight | Plastic Spot Lights | Mr 16 Led 12 V - Led Bulbs & Tubes - Aliexpress
I upgraded an old 12 volt halogen bulb in a glass cabinet with a Hue GU10 bulb and fixture. I had to enlarge the hole and rewire it. I think it was
Feit Electric 35-Watt Equivalent MR16 GU5.3 Bi-Pin Dimmable 12-Volt Track Lighting 90+ CRI LED Flood Light Bulb, Bright White (3-Pack) BPFMW/930CA/3 - The Home Depot
12 PACK LED PAR16 Light Bulb, Blue 3 Watts (25W Equivalent), GU10 Base 12 volt | eBay