mm blood one of my great passions.
if you dont like cutting it makes it a little bit more difficult lol although there are other options.
needles for a start, or scratching (pretty deep) there are toys you can buy such as the vampire paddle and gloves, the paddle is amazing, i love it!
i think i have a pic in my album of it after using it have a look see if thats the kind of thing you're wanting to acheive.
vampire paddles/gloves have small sharp pins in them and they can create quite a bit of blood. you could always try those rings (cant remember what they're called sorry) that they sell at goth shops and such places the ones that taper off into a long sharp point halfway down your knuckles if you use them firmly they draw blood and feel good.

metal horse brushes used for abrasion and spanking, those very hard bottle scrubbing brushes are good too especially internally if you're into that kind of thing but be warned you need to be a real pain lover for that!! and you have to be extremely cautious.

if you're inventive theres lots of things you can do but ultimately cutting is the most effective especially if you want to draw quite a good amount.