Emulate HA

Hi all.
Maybe a stupid question.
Is it out there some way to (partially) emulate HA Dashboard?
During the day at work sometime I’ve to hold on even such long time (20-30min), and I’d like to “monetize” this time making some test in building some new piece of interface.
I mean simply to build the button or card or whatever, where the most of time spent is to test various settings to get the aspect or the behavior you’re looking for, no matter at this stage which entity link to the button/card/whatever.
Just something installed on my pc where to test the dashboard component, without the need to access HA, restart it, etc etc.
Hope I well explained my intent…