Since I recently put my Ikea Skadis on the wall and they were hanging very loosely at the bottom, I fixed them to the wall with countersunk screws and the original spacer i drilled throug. For this I printed a countersunk head adapter, on which the "Ikea Skadis Screw Cover Bambu Edition" from "RavenSystem" fits to get a uniform and solid look.

Ikea Skadis Screw Cover Bambu Edition by RavenSystem : https://makerworld.com/en/models/209679#profileId-229597