To hold it in place i used this Model: https://www.printables.com/de/model/243890-t-nut-m3-drop-in-rotating-v-slot/files

The 3d printed scraper can be found here:

https://www.printables.com/de/model/122894-hexscraper-printbed-scraper

Feel free to modify it to customize it for your tools. I provided the Fusion 360 file for that purpose. “tool_holder_v2” has cooling spacers added so it won't cover my printers cooling vents. I made them as separate parts, so it is easier to print them and no support is necessary.

The Spacer is 15mm high so you need to use a 25mm M3 screw instead of the 10mm. 

It's made to fit my Ender 5, but it fits to 20mm wide bars a lot of 3d printers use. Please notice that the model is wider than 20mm and has an “overhang” on the left side. If you want to built it for the other side just mirror it you can also contact me if you don't know how to do so.