Thanks for all the questions. I can give you partial answers only since right now I'm looking for the equipment. I'm definitely going to get a jointer, so at least rough cuts are ok. I might get a thicknesser (planer), too or else just work with the table saw. Doesn't have to be parallel, though, but if there's a flat enough surface and straight side I can fix to a fence, I can clean it up on the table saw. Probably don't want anything thicker than 8/4 at the moment especially if it's a dense wood or prone to tear out.
As for species, I'm at least interested in getting some experience with the cutting properties of any hardwood, domestic or exotic. Figure of any kind is always nice!
Cost isn't the issue. I'll pay for shipping and fair price for the wood. I can afford anything I got space to keep around somewhere for eventual use, but that's not a whole lot. But it sounds like your idea of scraps is much more substantial than I was thinking. Was honestly just imagining people might have some 1/2 in thick scraps or cutoffs from oversized blanks or some pieces with minor defects they won't use. Stuff that would fit in a small flat rate box.