A good tube holder so you can easily mount your tubes at a wall. Print the model with your normal settings without supports, but attention don't make the same mistake as I: don't print this with PLA if you want to mount it outside, otherwise it will crack after a few months. So choose a material which is good for beeing outside.
hope you like the model, give me your feedback in the comments.
best regards
mlax
//23.08.2021 added version 2
The author hasn't provided the model origin yet.