Train Cab /throttle Controller Purchase suggestion

Hi to all.

i really need your opinion and suggestion.
my 9 years old boy really like to play OPENBVE and Tram sim games'.
now he asking that we buy for him Cab Controller which simulates the steering wheel and the cab of the train and tram driver.
I have seen many products but all of them are only suitable for airplane simulation games.

Can anyone recommend a product that would be suitable for OPENBVE with easy key mapping and installation? If possible a product that is good and not expensive even if it is from Chinese sales sites
please help me to find for my boy the throttle Controller.

thanks.

I'm not certain there's anything cheap available.
Train Sim controllers have always been thin on the ground.

There's the RailDriver, which is c. $200 https://xkeys.com/raildriver.html although you can probably get for cheaper second-hand.

Alternatively, there's the Densha De Go! USB controllers, e.g. https://www.suruga-ya.com/en/product/145257025 but again c. $200
The PlayStation ones may be marginally cheaper, and are supported with an appropriate PlayStation to USB adapter.

https://openbve-project.net/play-cabcontrollers/

If you find anything interesting and reasonably priced, but not supported, please let me know.

The easiest controller to get may be the recent Densha de GO controller for the Nintendo Switch, which works natively with OpenBVE plus a handful of Japanese games for the Switch. It was released two years ago, and you can get it brand new from Amazon Japan for around 100 USD (plus shipping and taxes): https://www.amazon.co.jp/dp/B097SSK4NC

As mentioned in the previous post, you could also try some of the old Densha controllers, but they can only be found second hand and may require jumping though a lot of hoops to get them out of Japan. The non-USB versions are usually cheaper than the USB controllers, but require adapters to connect them to a PC.