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

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

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

Chocks (for #100 rail) 10pcs : ECHO MODEL Unpainted kit HO(1:80) 164

Sugisawa 2-line Locomotive Depot II : Baioudou HO(1:87) Pre-colored Kit ST-027-87C

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

The Cradle of Monorail : Shin Tachikawa Finished product Non-scale

Micropac Flowerbed - White : Miniatures Nature Materials Non-scale 731-21m

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

Micropac Small grasses - budding spring : Miniatures Nature Materials Non-scale 717-21m

Micropac Flowerbed - Hundred Flowers : Miniatures Materials - Non-scale 731-29m

Micropac Sparrow Hide and Seek in the Frozen Land : Miniatures Nature Materials Non-scale 997-24m

Micropac Small grasses - the height of summer : Miniatures Nature Materials Non-scale 717-22m

Two Trailer Houses : Woodland Pre-painted HO (1:87) AS5542

Micro pack - Sparrow hide and seek - rainy season pattern : Miniatures Nature Materials - Non-scale 997-21m

Tea Field and Elevated Road (with pole between lines) : Yasuji Ibuchi Painted Completed N (1:150)

Chocks (for #70 rail) 10pcs : ECHO MODEL Unpainted kit HO(1:80) 163

J.N.R. Type Railroad Car & Building Limit : Classic Story - Design Indicator HO (1:87) PAR-0004

Epoch 4 era electric freight trailer (DB German Federal Railways): Preiser unpainted kit HO (1:87) 17120

Walking Railway Traveller : Preiser - Finished product HO (1:87) 14070

Epoch 3 era electric freight trailer (DB German Federal Railways): Preiser unpainted kit HO(1:87) 17122