Your search for "Rail for mini mini train" revealed the following:

American Railroad Official : Prizer - Finished product HO(1:87) 10535

Old coal mine: Farrar pre-painted kit N (1:160) 222205

Tunnel Portal Concrete Double Track Grey 2pcs : Popopro Prepainted N (1:150) MS-004

Tunnel liner GM for electrification (2 pieces): Molin material N (1:150) TL-12

080-00010 Choshi Electric Railway Station Employee 2 : Tiny Tales - Completed Colored HO (1:80)

Wooden Single Line Locomotive Depot Bake Paneling Kit : Chitetsu Corporation (Yoichi Miyashita) Unpainted Kit HO(1:80) 99970000002

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

Track Gauge 9mm N Code for No. 55: Micro Engineering Railways Track 42-109

Single Track Truss Bridge : Walthers Unpainted Kit HO(1:87) 3185

The Railway Man : Woodland Pre-painted HO (1:87) 1847

Train Crew and Passengers on the Suspension Rail : Pre-Sealed N(1:160) 79141

11-108 Powered Chassis for Pocket Line Tram : KATO N (1:150) Power Unit

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

11-109 Pocket Line Series Electric Locomotive Power Unit : KATO N (1:150) Power Unit

Railway Engineer : Woodland Finished product N (1:160) 2147

Concrete Block Wall A (Light Gray) 5pcs : Miniature Kobo Kit N (1:150) PKNS1007A4

Concrete Block Wall A (Gray) 5pcs : Miniature Kobo Kit N (1:150) PKNS1007A2

The Land of the Coal Mine - Spring : Miniatures Nature Materials Non-scale 735-21

Tunnel Portal for double track: Monroe Model Unpainted Kit N (1:160) 215

Tin Shed : Woodland Finished product HO (1:87) BR5056