I may not have been clear, but you will note that the lids were molds used for poring the concrete. So, get one proper lid and some Sakrete and go to town making your steps.
My wife wants to get concrete steps going through our lawn in the front yard. We are looking at different types and designs of concrete steps to see which ones we like best. We really like the look of these steps, but we would need to get that in concrete and not garbage can lids.http://www.unitstepjoliet.com