Having a 3D printer provides you with the opportunity to create anything you want. Even if you can't afford one, there are a lot of services out there that can do 3D printing for you. The best part, you don't have to study how to model objects. You can simply buy blueprints online, here are a few familiar video game items you can buy.
Cyberpunk 2077: Thermal Katana
The thermal katana was supposed to be part of the base game but was removed for some reason. No matter since based on the Cyberpunk 2077: Phantom Liberty trailer, the weapon might return. Regardless, you can still get one for yourself. Try to divide the components and print the blade in a translucent filament so you can add LEDs afterward.
God of War: Leviathan Axe
In the 2018 God of War release, Kratos had a different weapon as opposed to what he had in the previous titles. The Leviathan axe came as the protagonist moved on to a new mythology, which explains the runes engraved on the weapon. You can choose to separate the parts and print them in different color filaments, or you can just paint them yourself.
Assassin's Creed: Hidden Blade
This one, in particular, is from the Assassin's Creed Black Flag game, meaning that it was the blade work by Edward Kenway. It has intricate details so make sure that you're careful if you try to smooth it out. You can also get rid of the straps in the model and add actual leather straps instead. Other than that, the rest of it needs to be solid.
Stray: B-12 Robot
If you've played Stray, then you're familiar with the small and adorable floating robot that guides you throughout the game. B-12 is small enough to be printed as a whole in bigger 3D printer models. But, you can cut out the parts that are meant to light up and print them separately. You can use transparent or translucent filament for those.
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Red Dead Redemption II: Colt Navy Revolver
This is one of the models that already have separate components, which means that you won't have to cut it to pieces yourself if you choose to print it out in different colors. Plus, it would be easier to paint it. The firearm has a detailed engraving, so again, be careful when you decide to smooth it out.
League of Legends: Fishbones
Fishbones is one of Jinx's main weapons in League of Legends. This one is a bit bigger and more complicated than the rest, so if you want a life-size model, you'll have to print it out in batches. There are also certain parts that you can simply replace with leather straps, but you can choose to have it all 3D printed too.
The Witcher 3 Wild Hunt: Silver Wolven Sword
There are a lot of swords in the game, but Geralt's main blade for monsters was the silver Wolven sword, seeing as he trained in the School of the Wolf. The model comes with a scabbard, but it would be better off as the sword by itself, mounted on a wooden blank, but to each their own.