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

Self-propelled miniature train with built-in battery Pole specification: Yoshiaki Ishikawa, complete painted N (1:150)

Battery-Powered Self-Propelled Miniature Train Pantograph Type: Yoshiaki Ishikawa Finished product N (1:150)

064-00016 JNR Steam Locomotive Crew Pointing and Checking Engineer (Pre-processed) : Tiny Tales - Colored 1:64

Miniatuart mini [Tram and Board] : Sankei Kit Non-scale MP05-14

064-00010 Choshi Electric Railway Station Employee 2 : Tiny Tales - Colored 1:64

Self-propelled mini mini train with built-in battery Series 485 Viva Aizu : Yoshiaki Ishikawa Painted Completed N (1:150)

Battery-Powered Self-Propelled Mini Mini-Train Pantograph Type: Yoshiaki Ishikawa Finished product N (1:150)

150-00010 Choshi Electric Railway Station Employee 2 : Tiny Tales - Completed Colored N (1:150)

Shirakaba Kogen Railway DB1 Upgrade Kit : Classic Story Unpainted Kit HO(1:87) LO-0002

Pull Tab and Violet: Art Stage K - Diorama Art Work Non-Scale

064-00018 JNR steam locomotive crew - assistant engineer casting coal : Tiny Tales - Pre-Colored 1:64

Optical fibre diameter 0.25mm length 5m : Sakatsu Material Non-scale 4545

Miniatuart mini [Gas Station] : Sankei Kit Non-scale MP05-01

[Model] Small/Micro ATS Note: Kobaru Equivalent: Sakatsu Unpainted Kit N (1:150) 3729

064-00009 Choshi Electric Railway Station Employee 1 : Tiny Tales - Colored 1:64

THE MAN BEHIND THE MINI The Men Who Made The Mini: Gentaro Asaki, painted 1:12

Miniature rhinoceros for horticultural dioramas : Icom Pre-Painted Non-Scale GM9

150-00013 Choshi Electric Railway Station Employee 5 : Tiny Tales - Completed Colored N (1:150)

150-00012 Choshi Electric Railway Station Employee 4 : Tiny Tales - Completed Colored N (1:150)

064-00011 Choshi Electric Railway Station Employee 3 : Tiny Tales - Colored 1:64