a reminder (or a first time notice for most users) :
I'm sorry, you can't share compiled and ready to install channels, nor resources for building channels.
they contain copyrighted files, which is why the users have to use JNUSTool to get the necessary files themselves directly from Nintendo's servers.
You can't share fw.img because it's (c)IOS255 (all IOS have always been forbidden to share here in any form, wad, neek, etc.), nor the official bootmovie/bootsound/bootlogo located in meta folder.
I don't know about the shaders (located in /content/ folder), but I guess it's official nintendo's code too.
and of course, most (all?) the binaries in /code/ are nintendo's. only the xml is fine.
I've been talking with KhaderWelaye to work on a very simple solution to build channels (his tool, WiiVC injector Script) so users don't have to mess with many tools and don't share copyrighted files all over the forum.
a single program to pack all the iso or dol should be easy enough to prevent sharing resources.
You can share only data you created yourself, like the gamecube background picture for created channels I've seen few post ago.
or self created /meta/ files to replace the Nintendo's copyright logo, sound, etc.
edit:
resources you can share (made by users)
custom bootLogo :
https://gbatemp.net/posts/7590397
some nintendont resources :
https://gbatemp.net/posts/7590108
custom Zelda WindWaker background :
https://gbatemp.net/posts/7587575
empty background :
https://gbatemp.net/posts/7587633 and
https://gbatemp.net/posts/7590486
MGS boot files :
https://gbatemp.net/posts/7589752
And this thread (I hope it has only pictures, no binaries from NUS) :
https://gbatemp.net/threads/banners-icon-templates-for-wii-vc.483080/