I want to add to @hydro311 's and @ShadoW's answers:
- Dashboards - recent changes to the platform and mobile app have made some devices (lights/outlets) show up automatically in Rooms, without any effort on the users part.
- There are also several external commercially supported Dashboard integrations (SharpTools, ActionTiles), in addition to a number of community Dashboard integrations.
- There are Hubitat-compatible controllers available for RGBW lighting that can be mounted in a gangbox or used as a handheld remote. (https://rgbgenie.com). One of the principals (Sean Gnant) at RGBGenie is an active and helpful member of this community (@Gnant).
- There are a myriad of z-wave and zigbee garage door control options available - including the Zooz products indicated by @hydro311. @agnes.zooz from Zooz is also an active/helpful member of this community. Not to leave them out, that same characterization also applies to @Eric_Inovelli from iNovelli. There is also a community integration for MyQ garage door openers.