I'm knocking out a little set of shelves to go under one wing of my TS and hold my collection of hand planes close to my workbench.
I had one odd piece of plywood salvaged from a library magazine rack, and I more or less just started cutting on it without a concrete plan. I made the first crosscut as wide of a piece as I could manage in my little shop; somewhere in the neighborhood of 30". I cut the next one to the same length. That left me with a third piece a smidge longer than the first two. I ripped it into four equal pieces 3" wide. I chose to use narrow uprights to encourage air circulation, to keep the rust off my planes.
What I want to end up with is a simple shelf with four upright pieces and two shelves. I might make a third shelf out of another piece of this magazine rack. So now I'm left with a choice for how to join the shelves to the uprights.
Plan A. I could cut dadoes in all four upright pieces to admit the shelves. Then glue and screw them in. Problems with this plan are: no dado stack, and that's a lot of kerf-and-chiseling to do; a lot of room to screw up. Advantages are: easy to keep the shelves level, probably strong with minimal glue/screw if I get the dadoes to fit tightly.
Plan B. I could cut notches out of all the shelves to admit the uprights. Problems with this plan are: alignment/leveling of the shelves becomes more problematic. Advantages: less kerf-and-chiseling to do.
Plan C. Just screw the damn thing together. Advantages: it doesn't have to take much weight, and that would probably be fine. Disadvantages: it seems like a really wussy thing for a Real Dorker to do.
Plan D. Use this as justification to buy a dado set.