I have some old lights that I've been wanting to use with new bulbs, but many LEDs and CFLs have a wider base than the old bulb. This means that when the new "wide" lamp is fully screwed in, the bottom electrical contact will not make contact with the bottom of the socket. These extenders fix this by giving the bulb a little more "reach" for the pins to seat properly. It's inexpensive and works great. Note, however, that it also lengthens the lamp somewhat, which can cause gap issues in some applications.
Lamp LED Yeelight Smart LED Bulb W3 (YLDP005), E27, A60, 8 W, 6500 K
47 Review
Lamp LED Xiaomi Mi Smart LED Bulb Warm White (XMBGDP01YLK), E27, 8 W, 2700 K
26 Review
Royal Canin Gastrointestinal Low Fat Dry diet food for adult dogs with digestive disorders, 12 kg
23 Review
Smart bulb Yandex with Alice, base E27, 8 W, RGB color
76 Review