My toilet paper rolls were too big to fit in the sheep TP holder model by @TizianoRigo, and rather than reprint the whole thing, I made a little extension that pushes over the existing head pin and lets you adjust it yourself.. you may want to scale it in XY dimensions by 1% if you want a little easier fit.
The 3mf file also contains a small strip of plastic that I superglued to the underside of the holder to add some additional strength.
The author marked this model as their own original creation.