Summary

I did a rapid remix that suits my needs, starting from this one that I found here: https://www.thingiverse.com/thing:277979 I needed a hanger for the cable and a support for the accessories box.

It has 5mm holes.

I've printed it on PETG (but PLA works just fine) at 0.2 and used 20% infill. It is a little flexible, but it does its job. I suggest to go above 50% infill.

There are 2 versions, depending on the mountig point: top or wall

Print Settings

Printer Brand:

Creality

                                            <p class="detail-setting printer"><strong>Printer: </strong>                     <div><p>Ender 3</p></div></p>                                                                                <p class="detail-setting rafts"><strong>Rafts: </strong>                     <div><p>No</p></div></p>                                                                                <p class="detail-setting supports"><strong>Supports: </strong>                     <div><p>No</p></div></p>                                                                                <p class="detail-setting resolution"><strong>Resolution: </strong>                     <div><p>0.2</p></div></p>                                                                                <p class="detail-setting infill"><strong>Infill: </strong>                     <div><p>20</p></div></p>                                                    <strong>Filament:</strong> PolyMaker PETG

Dremel 3000 hanger