It's a flexible snake. (My first)
I checked videos how to make one, and I did it on Tinkercad. Here are all my public projects, all free to use, and the snake is divided into 3 parts. So, you can modify the head, the body, and the tail to make your own. https://www.tinkercad.com/users/aK8mVFfxk49
The rings that attach each part are 3 mm thick and resistant.
There is no assembly needed, no support, no brim used, and it's ready to use!
The total length is 15 1/2 inches long when fully extended.
I did it with my Ender 3 Pro, it took about 9 hours to finish, and the filament used was Silk PLA from Eryone.