This idea comes from solving 3 common problems of students; 1. not being able to stick things to walls, 2. not having much money and 3. forgetting things.
Step 1: Find a Nail / Picture Hook in the Wall
Step 2: Find a Steel Rule and Hang by Passing the Nail Through the Hole.
Step 3: Attach Memos, Notes Etc. Using Magnets, Pegs, Clips, Paper Clips, Bluetack Etc.
Step 4: Horizonal Variations
These variants are only for those who can stick things to the wall, or have two nails horizontal to each other at an appropriate distance:
1. For those with 2 nails - drill a second hole at the other end of the rule (this will not impair its use as a rule).
2. 1 nail and sugru 'hook' (see picture).
3. 2 sugru hooks (see picture).
The horizontal version can be used with 'S' hooks and also for kitchen utensils, etc as well as memos.