Building modular shelves with tetris pieces

Idea

I’ve an interesting project that’s a bit data related but not only. In my living room, I’ve a sort of opening in the wall between the door and kitchen countertop where I’d like put some shelves for my books. While having a dinner with a friend over wine, we were doing some random sketches then we came up with the idea of series of shelves made of tetris like blocks.

Requirements

I’ve of course certain expectations:

• Bookcase should be firm enough so that I don’t find all my books on the floor with the tetris pieces at 4am on a random day.
• It should be modular. There are more than one aspect to this of which the first one is a must:
  • I should be able to arrange tetris pieces I’ve in a way I want.
  • The base material for each piece should be reusable for all. So that If I want, I should be able to build different tetris pieces. For instance, I can convert my T shape into L after some time.
• Pieces should be attached to each other once placed in order to keep things stable.

Above is the main idea that I’ve. Then I started asking myself. Then I would I arrange the tetris blocks If I have all of them. Should I leave some empty spaces between pieces ? Should I use more straight blocks or more T blocks ? What size should be blocks if I’ve a wall of 1 meter (length) to 2.5 meter (height) ? What about a 3 meter by 1 meter, is it the same size ? What If I want to build my shelves under a staircase (sort of triangle opening for future shelves), can I have something nice ?

Where is the data part ? Or at least coding or so ?

In order to visualize all these, I’d like to write a small program which for a given dimensions arranges random tetris pieces in arbitrary way. Again based on the dimension, it would be nice to have some guideline/documentation for custom building tetris pieces for any one. I wonder if a project like this can go to kickstarter and be interesting for others too