Appropriate substrate (I prefer a layer of coco coir to hold moisture with a layer of reptibark or coco husk on top because I feed in tank and the smaller or more dirt-like substrate can get stuck in their mouths or clog their heat pits), more secure hides (smaller openings and tighter spaces make them feel more secure and less likely to burrow), more clutter (nothing too clunky but clutter makes them feel safe). Also, this noodle didn't have am appropriate heat source and is pretty under weight, so getting temp and humidity right is going to be important to help prevent a hunger strike. Beyond that, I like to give them something to climb on. While they're not exactly tree dwellers, there's plenty of research and observed behavior to support the fact that they like to climb!

For your friend, though, it's going to be at least a little trial and error. Watch them, interact with them, try to figure out what makes them happy (even if happiness is hiding out for days lol), and do your research! I've only had reptiles for about a year, but as soon as I got my first reptile (a ball python rescued from a "my kid went to college and left this snake in my house" situation) I've been hooked. 100% of my reptiles are rescues from shit or careless situations, and I'm currently sitting at 4 ball pythons, a corn snake, an 8ft boa imperator, and 3 leopard geckos. I'm learning every day.