Fell free to post any you like, make sure it is 1080x1920!
In most roms (not every), the boot/down animations will go in: system/customize/resource
They will also have to be renamed like this:
To Setup Custom Boot Animation
1.) Download boot/down animation of choice (1080x1920)
2.) Download a root file explorer (es file explorer, root explorer)
3.) Copy the boot animation zip file
4.) Navigate to /system/customize/resource with explorer
5.) Paste zip file
6.) Rename old boot/down animation with .bak at the end
7.) Rename new boot/down animation
I will start first and post what I have been using for boot/down animations.
This is a Beats Audio animation. The same one that comes with viperROM just without the viper part.
If this starts to grow I can even turn this OP into a list and get everything organized to help everyone find stuff a little easier.