This is a Gridfinity compatible holder for a single bottle of Magigoo. The hole is 30mm in diameter so it'll hold anything else that fits in it too. Its Gridfinity size is ½ height by 1x1. Original Gridfinity design by Zack Freedman (video describing the Gridfinity system linked earlier).
No supports required, I printed this with 2 perimeters, 0.2mm layer height and 5% infill, but it ended up kinda weak. I don't expect to be beating it up a lot so it's fine for me but you might want to up the perimeters or infill if you want it sturdier.
The author marked this model as their own original creation.