Probably the easiest way is with a community-created UI to the REST API. it is called “API browser plus“ and all you need is a web browser, it doesn’t require a laptop or a hub. You can create simple virtual devices with it, although with nowhere near the number of features and options, available with the hub-based virtual devices. But you won’t need to be a Developer.
SmartThings API Browser+ ... Now Available to All
There is also an FAQ on creating virtual devices using the 2023 architecture that you might find interesting: