A couple Saturday's ago, Patrick and I helped a neighbor move around some furniture in her small apartment in order to allow delivery of a new bed. She decided that she had all too many books in the process and began to get rid of several of them. She also had two particle board shelves that were, in all honesty, really ugly. She planned to get rid of them because they didn't really fit where they were and, as previously stated, they were ugly. Still, the storage would be helpful to her, and after having a hard time finding the right thing to replace the storage for a very low price, I suggested just making over the shelves.
This shelf was rather interesting. It was made completely of particle board and, I assume, at one point some glue. The pieces were just cut with notches to fit them together. While this is a rather smart way to build a really cheap shelf, it is not a good way to build an attractive shelf, nor is it a really good use of space; this technique leads to some odd protrusions which are neither attractive or useful (beyond keeping the shelf from collapsing, but I mean you can't put anything on them and they take up space).