It depends on how much time you’ll have her on it. If you’ll just be putting her there for an hour or so, just lots of plants and branches, or even just something like a weeping fig tree. If you’ll have her on it for long periods of time, she’ll need uvb and heat.
There’re many ways to go free range and it’s pure creativity. Like @MissSkittles said, it depends on for how long for the need of extra lightning. Another thing to consider is the room where you wanna free range, because they’re pure opportunists and grab every chance they can get to explore more. Trust me, keeping them in is a true challenge, therefore I went for safe and easy access. In that regard, is your room safe for her when she will escape her free range? My girl went after 6-7 months of age free range and never went back in a enclosure, now for already +1 year.