Adult Swim has been running a series of live-action Rick and Morty shorts staring Christopher Lloyd and Jaeden Martel. The set was not a green screen, nor was it some repurposed garage, although either of those would have worked. No, for this project, the team built a complete set designed to perfectly embody Rick's workshop exactly. Watch how it was done in this time-lapse video.
Read more about the set at io9.