I need to re-model my office. I need to get the books outta there so I can change desks, etc. etc. Finally knocked together a bookcase out of some chi-ply and some scrap maple. It is sized to hold the avalanche of paperbacks, CD's, DVD's and hardbacks that have snow-drifted into a corner of the office. It is also sized to stand behind a door that is always open into the spare room/den. That way it can serve a purpose and not be seen at the same time .
I used 3/8" dados in the sides and rabbets on the shelf ends. This ply was so irregular this was a good way to "fake" a good fit. I still have a bit of the maple LOML found on the side of the road a few years ago. Milled it down and made the trim. The toe-kick base allows access to adjustable feet to level the tall skinny critter. It will fasten to the wall when leveled.
I taped off the areas that would take glue with blue painter's tape and sprayed rattle-can poly on it. Pull the tape, apply the glue and clamp away. The bottom shelf is adjustable via shelf pins. Just goes to show you, if you need something quick-n-dirty, some cheap ply and leftovers can do the trick till you have time to build something nice.