I wouldn't recommend reading through this guide if you want to find easter eggs or secrets on your own.
This guide is probably not complete, feel free to tell me if you know any secret on this map !
I'll be editing this guide everytime i find a new secret, let me know if anything is unclear !
Note that there are different versions of the same map so you might not find some of the props on some of them.

Summer sledge


Big shell


Silly starfish (definitely not Patrick)


GreenTooth


Banana for scale


This one isn't really hidden but still, who wouldn't like to be a giant banana ?

ZotBoard


Cake slice


Mini bed


Hunter present


Green banana


Now you can be a giant green banana and this one is actually hidden

Upvote


Tiny toilet

The map spawning from time to time right next to the hunters starting point actually shows the location of the Big shell


The bread you can find right below the witches spawn has a custom name

If you have a hard time finding the props here is a not really accurate paint edit showing where to find them :

If you want more or are just looking for a guide covering all maps check this awesome guide by Donnie !
Donnie's profile !
http://psteamcommunity.yuanyoumao.com/sharedfiles/filedetails/?id=1115956696