Ok! Here’s the solution. Glued shelves for my shower. No drilling needed. Just glue and some time for the glue to cure :)
@jwildeboer I have to admit I was intrigued, at least the text parts I could understand give no clues at all about the mystery.
@ghostdancer Same here when I opened the package. I was like "The hell? What did I order? Was I drunk or asleep?"
Mastodon instance for people with Wildeboer as their last name