This guy, GavilanOrd , does some amazing work creating Star Wars dioramas, and a lot of the techniques/ideas shown is his videos could easily be applied to Legion. Here are his three most usual videos in my opinion (he references the YouTube channel TheBudgetJedi for lots of his inspiration).

Endor:

Tusken Raiders:

Tatooine:

Great resources for ideas.

What really gets me is the builders reaction in the Tattooine video to his custom power generator. He is like "well here it is" and it the best looking thing on his table and it was a self inspired design.

I bet if he won the lottery he would be like "Oh okay I guess I have to cash in the ticket now".