Your search for "spare parts" revealed the following:

Water Flow Parts Bow Wave B White : YSK Unpainted Kit Non Scale Part 363

Wooden Handrail Porch Rail : Grantline Unpainted Kit (Parts) HO(1:87) 5034

Western Style Window RGS Style Window Frame Set : Grant Line Unassembled Kit (Parts) HO(1:87) 5196

Coin cell CR2032 constant light board Ver2 (Changed battery direction version) : KEIGOO Electronic parts Non-scale 99021 "Sales start campaign! Special price 660 yen (usually 990 yen)

Western Style Window Window Frame Half Round: Grant Line Unpainted Kit (Parts) HO(1:87) 5150

Basic Always-on 5H USB Type-C basic board (for LED with connector, USB power supply separately required): KEIGOO Electronic parts, Non-Scale 99012

Acrylic display case for towers (transparent back panel): Sakatsu Case Non-scale 8805

33 parts including jackets, work clothes, bags, etc.: Prizer Kit HO(1:87) 17008

Basic Always Lighting 10 USB Type-C Basic Board (for LED with connector, USB power supply separately required) : KEIGOO Electronic Parts Non-scale 99013

Western Style Window Gothic Window Frame : Grant Line Unpainted Kit (Parts) HO(1:87) 5254

Western-style window frame: Grant Line unpainted kit (parts) HO (1:87) 5030

Western Style Window Triangular Roof Window and Door Set : Grantline Unpainted Kit (Parts) HO(1:87) 5259

Driver's cab for EF64-1000 (for Company T) 1 car in a set Full Color 3D Parts Electric Locomotive : Sakatsu Pre-colored N (1:150) 802

Window Western Style Fan Shaped Locomotive : Grant Line Unpainted Kit (Parts) HO(1:87) 5010

USB powered fog generating module : BitTradeOne Electronic parts : Non-scale MMSTGN

Sand spatula 3-piece set A : Icom Tools PHK26

Bierwagon (Spartenbroich) towed by 6 horses: Preiser, complete painted HO(1:87) 30438