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

Castle Line 2 : Yoshiaki Ishikawa - painted 1:150 scale

Track Gauge 16.5mm HO Code for No.55: Micro Engineering Railways Track 42-104

Shirakaba : Itsuro Saito - Painted N (1:150)

Normal Fence-C : Icom pre-painted assembly kit 1:144-N(1:150) EP-40

Coal scrap dumping site (included in the train) : Yoshiaki Nishimura, On30 layout section art work 1:48scale

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

Freight Train Home with Tokyu Freight Train 3041 : Yoshiaki Nishimura HO layout section diorama work 1:80scale

TL-33 Tunnel liner for Tsugawa Yoko double track (1 piece): Molin material N (1:150)

Micro pack Grass thicket (6mm) golden colour : Miniatures Nature Materials Non-scale 727-35m

Honey basket with 3 cars : Yoshiaki Nishimura HO layout section diorama work 1:80scale

1 guardrail: Pikestaff kit HO (1:87) 3

Straw Farmers and Local Railway : Yasuji Ibuchi Modeling work N (1:150)

Light Rail Sleeper Set HO2 (6.5mm gauge) Code 40 Only Value Pack 10pcs : Classic Story Unpainted Kit HO(1:87) PAR-0002-2

Wooden Single-Track Locomotive Depot Type-A Tin Roof Ver.: Baioudou HO (1:80) Unpainted Kit ST-031-80C

Micropac Small grasses - Autumn : Miniatures Nature Materials Non-scale 717-23m

Guardrails and delineators: Preiser unpainted kit HO (1:87) 18202

Small Portal Crane : Faller Unpainted Kit N (1:160) 222200

080-00020 JNR Steam Locomotive Crew - Assistant Engineer with Elbow on Window (Pre-processed) : Tiny Tales - Pre-colored 1:80

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

Railway Scales and Uncle (Trackside Scale) : Woodland Unpainted Kit HO(1:87) D231