The favourite items in my room (other than plants saving that for another post) are lamps! They can be moved around often, following you across homes (even overseas) and creates a mood like no other :)
Of course you can have too many lamps, but ideally if you can create ambient light across your space whilst it being comfortable to move and work without the ceiling lighting turned on, your space will be undoubtedly cozy.
There are many options but pick one that will fit the setting and provide the type of lighting you are looking for. Always look for warm lighting ideally :)
Of course after all the lamps, another light id love to recommend to all plant keepers is the sansi lights, super strong and have had a great experience with them so far