Stone

2 down a few more to go. Ones not exactly ready, but it should just be a matter of time. Sweat could be a viable option but it'll take quite a bit of effort. Tears aren't that viable, but there might be some way. There's also one I'd prefer to avoid if possible.

For the sake of symmetry, I want to poke the finger on my other hand. But that still wouldn't be considered fair. Let's poke each finger once.

I've dripped most of the blood in the same spot and you can definitely tell the difference. There's now one pool ball sized spot of sandy dark goldness. That sounds like a lot until you consider how it doesn't even cover 1% of just the spike.

Quite a few options, but I might still be missing something. What haven't I thought of yet?