I've been working on some fancier designs lately. My thing is using very exotic and interesting woods. Tubi and katalox are my two latest finds. Tubi is from the solomon islands, and is almost exactly like lignum vitae in every way. Sinks in water, destroys bandsaw blades, about as hard as aluminum, ect. From what I've gathered, its second only to lignum vitae in both hardness and toughness. Its also used like lignum in ship bearings in the solomons. Katalox is a very interesting wood, and actually one of my favorites. I actually bought a board from the first shipment of it ever available here (western canada) it's about the 5th hardest wood around, but not as dense as others. Dark purple color (darker and far less vulgar than purpleheart, and it patinas to look like ebony, rather than mud) and it has a very interesting grain. Almost burl like in its figure, and lots of little bird's-eye spots.
My next trip to the hardwoods supplier is going to be for an assortment of ebonys, and possibly some rosewood and cocobolo. I have a bit of cocobolo, but not much left. I'm really lucky to have one of the biggest exotic wood suppliers in the country just a few minutes drive from here! I also work for a tree service and get lots of interesting stuff from that. Currently have a pile of acacia milled up and drying. Close relative of koa, but a brilliant yellow color, almost like osage orange. And about as hard as brick.
you can never have too many tools