Go to your local grocery store, and pick up a jumbo raw shrimp (dead of course and ready for human consumption) and a womens short nylon stocking. Put shrimp in stocking and tie closed, put stocking with shrimp in tank and let it sit 48 hours up to a week (monitor your amonia levels, they shoudl rise fairly quickly), when amonia has spiked between 4 and 8, then remove stocking and discard in outside bin.
Then just wait till the cycle completes (amonia 0, nitrites 0, nitrates 10 to 40) and your done. No fish harmed during this type of cycle.
I believe you can also start a cylcle with uncured liverock, and just plunk it into a tank and wait till the cycle is done.
The old school of tought (which I was brought up on) always involved cycling marine tanks with fish, but its really not necessary and causes undue stress upon thos more hardy fish that are used commonly for cycling.