I'm toying 🤪 with contrapting an O gauge trainset using Peco set track*. Basically a simple BLT representing a freelance "heritage railway", it won't have much in the way of scenery beyond the railway fence and the ballasting will consist of "granite effect" spray paint applied before laying the track. I may have a bash at "signalling", but operation will be by hand**.
Stock is a mix of old Lima and Slaters wagons, rather newer Peco wagons, a Dapol Autocoach and Dapol locos (a 14xx and an 08 diesel shunter).
The older stock may well be worked over with weathering powder, but I'm not going near the locos with the stuff! So yes, perhaps a bit more than a train set, maybe a layout but not a model railway as some folk would define such things. I don't give a flying 'eff.
* Set track, rolling stock and locos bought at bargain prices, so its as inexpensive as possible .
** Given that 3 link couplings imply a Hand of God operating methodology, I won't be bothering with point motors or under-board rodding either!