How to build one:
Take a small wooden box.
No that will never do there is a lot of bullshit.
Take a large wooden box.
It should have sides all around and a top and a bottom.
Make one of the sides be a door. Use tools for this. I don’t know how. Ask IKEA.
Make a latch be on the door. Use tools again.
Make the latch have a lock.
Use a good sturdy lock.
Whenever you come across bullshit, scream “BULLSHIT!”
Then grab it and put it in the box. Lock it up tight.
The screaming part is optional but makes for more entertainment factor.
Periodically set the box on fire to burn up the bullshit.