Your search for "Ultra small LED" revealed the following:

LED module with magnetic switch with lead wire : Blue : BitTradeOne Electronic Parts Non-scale ADMGLWBL

Chochin B Red Sake, Yakitori, etc.: Sakatsuo Kit HO(1:87) 1510

LED module with magnetic switch 3 set : Yellow : BitTradeOne Electronic Parts Non-scale ADMGLYE3

LED module with magnetic switch : Warm white : BitTradeOne Electronic Parts Non-scale ADMGLWW

LED module with magnetic switch 3 set : Purple : BitTradeOne Electronic parts Non-scale ADMGLPR3

LED module with magnetic switch 3 sets : Blue : BitTradeOne Electronic Parts Non-scale ADMGLBL3

Small TV with LED : Sakatsuo Unpainted Kit HO(1:87) 1507

Chochin D White Okonomiyaki, Chinese noodles, etc.: Sakatsuo Kit HO(1:87) 1514

90mm Cube Miniature "Kowloon Castle" : Taro, Diorama art work Non-scale 275

Ramen "Itsuki" : Nobuko Kameda - Painted non-scale

Always On 10 Extension Board (for LED with connector 10 lights can be mounted): Sakatsuo Electronic Components 2575

Extension Always Lighting 10 with extension cord (for LED with connector, 10 lights can be installed) : KEIGOO Electronic Parts Non-scale 99015

Wobbling lights extension board (for 4 LED lights with connectors): Sakatsuu material 2573

"Train runs, scenery turns!" : Yoshiaki Ishikawa, Diorama art work 1:150

Miniature Hina-Decoration: O-nire-sama and Ohinasama, 5-decker decoration B In-frame : Nobuko Kameda Pre-painted Non-scale

Aurora Christmas : Kumi Chikada - painted, Non-scale

Gourd Rail for Mini Mini Train : Yoshiaki Ishikawa Railway Track 9mm Gauge N(1:150)

Blue Restaurant : Nobuko Kameda, Diorama art work Non-scale