Your search for "Connectors" revealed the following:

Battery case B: 3 x AA: Sakatsuo material, Non-scale 2560

Ultra-compact controller Flicker 0.5:0.5 : KEIGOO Electronic parts Non-scale 92011 Sales start campaign! Special price 660 yen (regular price 990 yen)

Hexagon Socket Head Fittings, Double Dia. 1.8mm Flat, Tapered : Sakatsu Detail Up Non-scale 4458

Ultra-compact controller "Heike-Botaru" like : KEIGOO Electronic parts Non-scale 92002 Sales start campaign! Special price 660 yen (regular price 990 yen)"

Ultra-compact Controller Air Obstacle Lights 2 : KEIGOO Electronic Parts Non-scale 92032 Sales start campaign! Special price 660 yen (regular price 990 yen)

Hexagon and hexagonal bar 2.0 x 250 mm : Plastruct plastic material, non-scale 90875

Chochin C White Ramen, small dishes, etc.: Sakatsuo Kit HO(1:87) 1512

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

Hexagon Socket Head Fittings, Flat 1.8mm : Sakatsu Detail Up Non-scale 4451

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)

Chochin B Red Sake, Yakitori, etc.: Sakatsuo Kit HO(1:87) 1510

Japanese lantern A red, skewer friend, oden etc.: Sakatsuo Kit HO(1:87) 1508

Ultra-compact controller Fluctuation Strong : KEIGOO Electronic parts Non-scale 92008 Sale Start Campaign! Special price 660 yen (normally 990 yen)

Ultra-compact controller "Hime-Botaru" like : KEIGOO Electronic parts Non-scale 92003 " Sales start campaign! Special price 660 yen (regular price 990 yen)