So, I'm going to be starting a new campaign soon, and one of the first locales that my group will be visiting is a barren desert planet. The idea behind the planet is that it's uncharted, due in part to an anomaly that drags ships out of hyperspace toward it, which then crash land upon it.
Apart from a large colony / "city" of surviving droids and small bands of surviving humanoids (which have taken to preying on recent starship crash sites to survive), there are no permanent settlements on the planet. It's basically a big ball of dust with starship debris littered across the planet and in orbit.
Now, aside from your regular inhospitable climate / environ survival type stuff, I'm having difficulty coming up with ideas for compelling events that might happen on a desert planet. I already plan to have my players interact with NPC survivors from the transport they crashed on (particularly tension between groups of them), as well as a duo of mechanics that will enable them to escape the planet. Aside from combat and survival, I'm just sort of blanking on some interesting things that the players could do.
I know that I could change my setting entirely (and I might), but at this point, I'm also interested partly as a mental exercise, so your ideas are welcome.
tl;dr: Other than survival and combat, are there any fun things you can think of to challenge players with on a desert planet?