Alright so this' the deal: I live in a student dorm at uni. and we're not allowed to nail stuff onto the walls leaving drill marks and nail marks and what not.
But my problem is that my room's almost ALWAYS a mess and I always loose my keys, either on the table with my computer and study books or on the drawer.

Step 1: The Idea

So the ceiling is framed with an extra piece of carpenting where it's connecting with the wall. This means that there's a piece of wood is hiding the corners at the same time giving us a way to put up pictures, mirrors and paintings without the use of nails.

So with this in mind and a piece of acrylic plastic in my hand for another project ('ible coming up soon) and with a fascination for geometrical figures I decide to make this my key box.

Step 2: Materials and Tools

The materials are:
30x20x3 mm piece of acrylic
Cotton thread
Paper clips
Paper clamps

And the tools are:
Glue
A dremel or similar
Ruler
180degree ruler

Step 3: The Design

I'm only going to use two thirds of the sheet for the actual hexagon, which got to be the geometrical figure of the day.
The remaining part is going to be used for adding notes whenever needed; such as a shopping list or a note to my gf saying how much I really love her.

Step 4: Prepping the Acrylic

First of I have to decide to location of the net, the notes and the holes for mounting and mark the out.

The holes for mounting is up to you but for me I thought 1 cm down and 3 cm in was desirable as I planned on placing the hexagon in the middle between them.
Then I had a starting point for hexagon and everything else fell into place.

For making it simple and without getting the protective covering of the acrylic all messy with marker pens I used a white piece of paper for the design of the hexagon. Just place the acrylic over it and then "X marks the spot" so to speak.

Take the dremel and a suitable drill for making the holes and start drilling. Remember to not remove the protective covering as it protects against scratching and making sure that the drill holes are clean and even.

All done? Good. Remove the plastic covering and glue the paper clamps into place.

Step 5: The Net and the Key-hangers

Ok, all the holes are made and the paper clamps are glued on.

Time to weave the web. Choose a hole and stick it through and start connecting the holes. Make sure that the cotton thread connects all holes on the outside because it's on this side that the paper clips are going to be put so that we can place the keys on them. This is the most tedious and hardest part, since the thread is all one long line and you need to keep it straight the entire time for best results.

To make the key hangers we take the paper clips and bend them into a s-shape. That way we can hang the clips where the most threads connect and that way support the weight of the key-ring.