Toilet paper holder (shaft) including a printable spring.
I have included two version, one in which you can add your own supports and one with included supports (shown in red), you just remove them after the print.
Print the spring horizontally and use a brim
To assemble it insert the spring into side1, then insert side2 from the open slot all the way in side 1 and rotate it clockwise to the slot with the closed end.
The author marked this model as their own original creation.