I have only recently started to play Elder Scrolls Online (but to be fair, I had only starting playing Skyrim in January 2020, so my Elder Scrolls experience is nothing compared to many people). There are some really cool mods out there to bring some ESO aspects into Skyrim, and even more that don’t really have anything to do with ESO, but bring other parts of Tamriel into Skyrim.
There is an amazing project in the works that aims to use Skyrim as a base to create most of the rest of Tamriel. Here are links to more information and the mods that have been released so far:
Please remember to endorse any mods you download and like, and if you appreciate all the hard work that goes into creating a mod, consider giving kudos to the author on Nexus as well (the Give Kudos button can be found on the user’s page).