Let’s play a game. What tree to plant in the poop hole?

So there’s an old outdoor latrine (read: hole in the ground) left by the previous owners a few meters off the south east side of the house. What’s a good tree to plant in there once we fill it in? For info, semi arid steppe climate (close to the Sahara desert in Algeria), usually doesn’t go below freezing, sandy soil, but could be watered by gray water from the house. Bonus points for  guild ideas in addition.

My first thoughts are non edible, something  useful maybe coppice-able for mulch or rocket stove wood. Forage for bees? Easy on the eyes? A tree wild birds (we’ve seen hoopoes!) love to make their homes in or eat berries off of?

The National Tree of Algeria might be a nice addition:

Quercus canariensis, the Algerian oak, Mirbeck's oak or zean oak, is an oak native to southern Portugal, Spain, Tunisia, Algeria and Morocco.

https://en.wikipedia.org/wiki/Quercus_canariensis

Ooo I’m imagining a swing hanging off that one in a few years ^^
I like the idea
Plus the acorns are edible (could be fed to animals too I believe)