I use the Hanging Organizer for my loft bed, in which I can tuck my smartphone and other things my water bottle. Using a commercially available Bürotackers, I have the strap tacked down to the slopes Utensil, so a loop. Through this loop lead the bars of the grille of my high bed. The slopes Utensil thus depends outside the grid of the high bed.
Using this method, the product holds wonderful and I can perfectly stow my stuff up in the air. Even the low price has moved me to buy, because other systems for loft beds are quite expensive and rare.
I would recommend the Hanging Organizer for bunk beds.
