Frog God Games is upping their monster game with Tome of Horrors 2020 (in its last few days on Kickstarter). This full colour manual of monsters will include of 250 nasty creatures to help flesh out your games. The Frogs always do a great job with monsters, so this is definitely a cool project.
To help promote it, they've released a full encounter/mini adventure featuring one of the beasties. You really need to check it out. It's called Killer Frogs and was written by my homie at Planet X Games, Levi.