Sometime you need to access Shadertoy built-in media (texture, video, music…) out of Shadertoy (e.g., if porting your shader to desktop, or writing a paper or a blogpost about your shader).
Here they are:
2D textures:
NB: font generator (CC0) by Octavio Good
Cubemaps:
shadertoy - unofficial 
Hey Fabrice, the “Grey noise3D” file under “Volumes” above gives a 404 error on the Shadertoy website, while the RGBA one works BTW.
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strange, since the file is still there. Possibly access right issue. -> investigating.
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bad link fixed.
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