Over-the-Toilet Leaning Ladder Shelf

Glue and brad-nail a 1x3 back to the rear edge of each shelf board, then cap each end with the matching 1x3 sides — a shallow three-sided tray per shelf.

The backs and sides earn their keep the day the ladder is standing: everything on these shelves lives on a 10° slope, and the lip is what keeps the mouthwash from exploring.

Cut both rails at 10°, ends parallel, long point to short point — check them against each other face to face; they should match exactly, not mirror.

Lean the rails against a wall at their working angle and attach the bottom shelf box between them, level, with 1-1/4" screws through the shelf sides into the rails. A level on the shelf while you drive the first screw saves re-doing all four.

With the bottom shelf holding the rails in plane, add the middle and top shelves — each level, each screwed through its sides into the rails. Space them for what actually lives above your toilet (tall bottles need more room than folded towels).

Stand it over the tank, check it clears the lid at full open, and add a discreet screw or anti-tip strap from the top of one rail into a wall stud. Finish every face of every board — this thing lives in steam.