A modified version of Dr_Newbie's Replaces flashbangs with the lobster meme mod, which implements the possibility of creating flashbang packs to be randomly chosen each time you get flashed.
Flashbang packs support randomized visuals (textures and videos) and audio.

Inside the FlashBang Packs there's an example pack included which is a port of Dr_Newbie's original lobster meme flashbang to the new system.
The sample pack is no longer included by default with the lua mod, manually download the Sample Pack archive from the downloads section.

Github repo

Making your own flashbang pack

1. Navigate to the FlashBang Packs directory that's located inside your mods/ folder.
2. Create a new folder.
3. Create a json file which contains the list of flashbangs and their linked assets.

example meta.json:

[
    {
        "textures": [ "assets/microwave/image.texture" ],
        "sounds": [ "assets/microwave/sound.ogg" ]
    },
    {
        "textures": [ "assets/windows xp/bliss" ],
        "sounds": [ "assets/windows xp/xp_bootup", "assets/windows xp/xp_error" ]
    }
]

File extensions are automatically detected/assumed by the mod and it will also look for assets in sub-directories named

Example image (port of mrcheezewhiz' The Dentist Flashbang):

Uploaded with Dr_Newbie's permission.