1 - Cubes
3 - Screws
5 - Chameleons
10 - Crystals
10 - Mirrors

Note that Cubes are often found in groups. So if you think you might be missing another item, you could just be missing cubes, or some other combination of items.
This guide is not meant to be a comprehensive tutorial, simply a list of every EXP pickup location.

If you still require additional help, you can watch a video of me collecting every EXP pickup here (I apologize that it is poorly edited and out of order. I organized this Steam Guide better than this video):
https://youtu.be/qeUtbCYn6QE

You'll need the drill ability found in Wolloh's Hollow to dig through the dirt here

throw a bomby-bird over the fence to break the boulder hiding this screw

To get Garbage Grump's crystal, you'll need to be at least Level 3.
When you're ready, start by collecting 7 garbage cans:




After finding the first 7 garbage cans, go visit Garbage Grump. He lives in a hole under the water

Grab the final 8th garbage can and talk to Garbage Grump for a crystal reward

Lure over a turtle to bounce on to get these cubes

Once you reach Level 3 you can collect these




Enter the level 2 door to find a gear you'll need to ride the dragon cliff elevator

When you're up, jump past the dragons and unscrew the bolt to reveal a dirt path down

here you'll find 2 cubes in the dirt under the dragons


There is a cube hidden here behind the chimney.

Enter the pool to grab a bomby bird to open Ma Spider's grave





Headbutt the graves in the same number sequence that's written on the grave to reveal a cube


Enter Knirt's shop and headbutt the fish on the wall. It will start squealing the same way the graves do, revealing the answer to the next puzzle: 21132113


In the house near here you will find Dr. Awkward's Diary. The order in which the names appear in the diary is the solution to the next grave puzzle: 23111323


After solving all three grave puzzles, the entrance to the Dragon's den will open







climb the spider's string to reach this cube

Push the button in the water to reveal a boost ring, allowing you to jump off the fish and reach the cube

To open the dragon's den you must solve the grave puzzles. Refer to the Hollow - Cubes section


Grab a bomby bird from the Zoo's roof to blow the zoo entrance open.

Screwing the gear in the mirrored Hollow will open a gate that was previously blocked

Rotate the swivel bridge so it's pointing towards the Owl tree and the squiggly dirt wall


Ride the bat up and enter the tree. When inside, push the bouncy leaf near the screw to reach it


In the same room as the previous screw, hit the peg on the wall to move it to the other side





Drilling down through the center of the tree and hitting the log will lower it to the area in the water.
This will allow you to reach a wooden peg inside there, hitting it will let you reach another screw.