Adding the environment IDs I've found.

docs/events/environment_objects.md

@@ -1,11 +1,92 @@
 # Environment Objects
 
 Events in the range 5500-5575 spawn environment objects.
-- 5500 is a palm tree
-- 5575 is a bush
 
 Note: All events from 5575 and up spawn a bush. (e.g. event id 30000 spawns a bush)
 
 Be mindful that these environment objects may interfere with event modifiers (id 5000+ events are used as event modifiers)
 
-[A proper list of environment objects will be made at some point]
+Note: many of these objects must be placed above the ground, otherwise they will clip into the ground.
+
+- **[5500, 5501]** Palm trees
+  - Should be placed 3 tiles above the ground.
+
+- **[5502]** Rock
+
+- **[5503 .. 5505]** Sales carts (blue/red/green)
+  - Should be placed 2 tiles above the ground.
+
+- **[5506 .. 5509]** Umbrellas (yellow/blue/red/green)
+  - Should be placed 2 tiles above the ground.
+
+- **[5510, 5511]** Town signposts (blue and red / green and purple)
+  - Should be placed 2 tiles above the ground.
+
+- **[5512]** Window
+
+- **[5515]** Shop counter
+
+- **[5516]** Snowy tree
+  - Should be placed 3 tiles above the ground.
+
+- **[5517 .. 5519]** Rock piles
+  - Should be placed 1 tile above the ground.
+  - 5518 is smaller than the other two.
+
+- **[5520 .. 5529]** Crystals
+  - Somewhat oddly placed, vertically - they're shifted not quite a full tile vertically.
+
+- **[5530 .. 5539]** Tombstones
+  - Should be placed 1 tile above the ground.
+
+- **[5541, 5542]** Bookshelves
+  - Should be placed 2 tiles above the ground.
+
+- **[5543]** Couch
+  - Should be placed 2 tiles above the ground.
+
+- **[5544]** Lamp
+
+- **[5545]** Small table
+  - Should be placed 2 tiles above the ground.
+
+- **[5546]** Stacked books
+  - Should be placed 2 tiles above the ground.
+
+- **[5547]** Desk
+  - Should be placed 2 tiles above the ground.
+
+- **[5548 .. 5551]** Bunny pictures
+  - Lower edge is 2 tiles below the event.
+
+- **[5552]** Door
+- **[5559]** Pyramid door
+  - Should be placed 2 tiles above the ground.
+
+- **[5553]** Bunny statue
+  - Should be placed 2 tiles above the ground.
+
+- **[5554]** Potted plant
+  - Should be placed 2 tiles above the ground.
+
+- **[5556]** Lightpost
+  - Should be placed 2 tiles above the ground.
+
+- **[5557]** Casket
+  - Should be placed 2 tiles above the ground.
+
+- **[5558]** Lit candle
+
+- **[5560]** Lit candle on stand
+  - Should be placed 2 tiles above the ground.
+
+- **[5561]** Large tree
+  - Should be placed 4 tiles above the ground.
+
+- **[5562]** Bushes
+  - Should be placed 2 tiles above the ground.
+
+- **[5568]** Rumi's house
+  - Should be placed 4 tiles above the ground.
+
+- **[5569]** Mr. Tako's desk