A collection of lists (30s and others) that can be referred to at the table.
What happens? Are you kidding me?
Save/Help the Halflings! They offer rewards. Material and otherwise.
Have you ever been in a position where you needed a quick break but your players were too ancy to break as well?
Termites, in certain places, make homes that can be eight meters high and only a half meter wide. They are built facing North to South to take advantages of the suns travel, maximum heat in the morning and evening and little in the afternoon. Imagine grassy plains with vertical structions facing a certain direction all over the place. Ambush? Maze? New creature? Larger structures?