1. Find the hat page and then download the rbxm file
2. open roblox studio
3. open the .rbxm within a world in roblox studio, force its position/rotation to the origin point (0,0,0), right click the model and try and export it as an .obj file.
4. open .obj file in blender, scale the model up by 10 (or whatever you want, i scaled them by 10, you scale them up by whatever), provide whatever collision desired, change the model and material name to whatever you want, export
5. make a .qc file in notepad++, add your model and material directory in there, as well as a few other things. I found a basic one by clonetrooper i think off an old yt video.
https://www.youtube.com/watch?v=05JY1dT-fiw
6. make sure it all works and its set boom, rinse and repeat for every single hat if you want

i'm not ripping anything so if you want to rip anything here're the steps copied from the egg addon