Oh my god, I cannot believe how dumb I was! I just realised that the TF2 Sandwich is actually called "Sandvich"! Oh dude, I've been playing this game since the last year and I didn't realise that! ._.



If you want to add the actual sandwich and not a white box, you can download it here: http://tf2.gamebanana.com/skins/108608 - I am not sure if it's just the texture or also contains the models. If it's just a texture, then the model should be somewhere inside the TF2 files.