Downloadable files

ZIP archives

Another map! - Minecraft 1.9.4 map
PGM image viewer (in quarantine)
Paper computer
VVSZC Tivadar Puskás vocational school in Minecraft (V2.1) [Minecraft 1.21.10 world]

Media files

Music:

These files can be used according to the next Creative Commons license: CC BY 4.0

Gradiens
Wonder
Side to side
Material

The same thing is also applied to these audio codec testing files (lossless):

Full kit

Uncompressed videos for testing codecs

Because of the huge file sizes, they are hosted at archive.org.
The first collection

PDF documents

Media files in QR codes