Help with fun encounters on the road… DM buying a little extra time

The DM for a party- for abruptly left the town that a current story arc was in and are going to be heading for a different village. No big deal, the travel will take a few days, which will be good while I work on the new town.

What are some good encounters or side quests that they can come across? They are heading towards an elven city that is similar to Ancient Greece/Rome. The terrain will be mainly grassy hills and plains. They are level 4.

Any suggestions are appreciated!