How do you climb with blisters?

If the blister is not that big, then I just put a band-aid on it and wrap it in tape so the band-aid stays in place, and that's it. If the blister is big and not popped, I usually wait a day or two before climbing.

I prefer to not pop blisters, so I just usually wait until it either pops anyway, or until it goes down in size to the point where I can climb with it. During those days I would normally do some weight training.