Limitless Encounters Volume 1 (softcover)
Limitless Encounters Volume 1 from Limitless Adventures provides you with 173 new encounters for Dungeons & Dragons 5e. The encounters span 17 distinct environments and include new monsters, spells and magic items.
There are also over 500 additional adventure hooks that a DM can use for follow-up quests.
With break-downs by environment, this is a great resource for DMs suddenly faced with players going off the main adventure and entering unprepared areas. Not all of these encounters are combat based, so even providing a chance meeting can develop into excellent role play.