This holder can be printed multiple times to hold as many as you need and then placed into some enclosure. The box provided can have 4 inside, but you don't have to print them all.
The entire set took me about 70g of PLA (with 5% infill and 2 layers for top/bottom). The finger cut around hotend is not really functional, more like a way to make less friction, it's easier to grab hotend directly via the top part so I might redesign this someday, but I'm sharing it in case someone will find that useful as is.
The author marked this model as their own original creation.