Hollow 2 -

: For a more "secret compartment" style, you can learn to hollow out a stack of paper using magnets and cutouts to hide items inside. Hollow Knight Inspired Crafts

While there is no single entity known as "Hollow 2" that generates a paper, there are several distinct projects and DIY crafts that involve creating hollow paper structures or relate to the "Hollow" theme. Depending on your goal, you might be looking for one of these: Hollow 2

If you want to physically generate a hollow object out of paper, there are several popular guides: : For a more "secret compartment" style, you

: There are even specific guides for folding a Hollow Knight head using a 16x16 grid. Scientific & Creative Contexts Hollow 2