I don't remember the names of the cosmetics so I'll just say weapons:

Scout - Scattergun (Aussie), Winger, Wrap Assassin

Soldier - Rocket Launcher (Aussie), Battalion's Backup, Disciplinary Action

Pyro - Flamethrower (Regular, the Aussie is ugly imo), Festivized Panic Attack, Powerjack/Homewrecker

Demoman - Grenade Launcher (Aussie), Stickybomb Launcher (Aussie/Regular), Frying Pan

Heavy - Minigun (Aussie), Robo-Sandvich, GRU

Engineer - Festivized Shotgun, Lugermorph, Wrench (Aussie)

Medic - Crusader's Crossbow, Festivized Medigun, Ubersaw

Sniper - Sniper Rifle (Aussie), SMG (Aussie), Kukri

Spy - Big Kill, Ap-Sap, Knife (Aussie)

I told y'all these are unrealistic