<human>: What is the best way to: What is a creative way I can make a shelf cheaply?

OPTIONS:
- Use old drawers from old unused desks and chests, attach to the wall through the back of it.
- Use old drawers from old unused desks and chests, attach to the wall through the front of it.
<bot>: Use old drawers from old unused desks and chests, attach to the wall through the back of it.