Your search for "ultra small led" revealed the following:

Flashing control Super 8 extension board (for LED with connector, 8 lights can be installed): Sakatsuo Electronic Components 2577

Wobbling lights basic board (for 4 LED lights with connectors): Sakatsuu material 2572

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

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

Ultra-thin cord, outer diameter approx. 0.38 mm, blue colour : Sakatsu Material Non-scale 4513

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

Code Outer diameter approx. 1.2 mm Red colour : Sakatsu Material Non-scale 4518

Ultra-thin cord, outer diameter approx. 0.38 mm, black colour : Sakatsu Material Non-scale 4510

Extra fine cord, outer diameter approx. 0.38 mm, red colour : Sakatsu Material Non-scale 4511

Always-on extension board (for 8 LED lights with connectors): Sakatau material 2571

Superfine cord, outer diameter approx. 0.38 mm, green colour: Sakatsu Material: Non-scale 4514

Micro Control Board : Sakatsuo Electronic Parts 2401

Superfine cord approx. 0.15 mm outer diameter (30 m each red and green): N5038

Self-propelled miniature train with built-in battery Pantograph specification: Yoshiaki Ishikawa Finished product N(1:150)

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

AC adapter : Sakatsuu material, Non-scale 2559

90mm cube miniature "Seaside Bar" : Taro, Diorama art work Non-scale 284

Street lamp A : Sankei kit N(1:150) MP04-78

With mounting base: Sakatsuo Electronic Parts 2912

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