First I found out about a guy in Half Moon Bay with a sort of reclaimed lumber yard. I went there, and stumbled upon a relatively rare wood called IPE. (EEPAY). It is a rock hard hardwood similar to teak and is a really impressive wood. I bought the whole stack for like 60 bucks.
I used a lot of it for a playhouse for my kids, but I had a bunch left…It took a bunch of planing and cutting, but I milled it down to usable planks.