Alright Rich, I finally came up with some stuff! Now, I have no idea what type of materials you have to work with, if you have collected materials or are you going to purchase stuff or what but I think any of these designs could utilize bought or found material. I know this top photo is probably not what you had in mind but I thought it was just a good example of something different, out of the norm. You just have to take the material you have and adapt it to designs you like.
If you look closely, these are all faces! Also, check out this lady's work! Her stuff is fantastic! and very unique. Just click on all of the thumbnails to see a wider gallery of that category.
I don't know if this is what you are looking for Rich but there are just countless things you can do with steel and found material. If your imagination can come up with it, you can build it. I always look through as many books and other stuff as I can and just try to absorb the images of the things I like. Then, when I go to work on my project, those designs seem to come out subconsciously. My pieces always are unique but it might use the idea of vertical repetition, or circular forms or whatever that I saw in other pieces. If say, you have a bunch of metal gears or pipe or even pre-bent rebar, you must completely disassociate the material from what it is and look at only it's shape. If the shape is repeated a certain way, does that look good? If I alternate the shape, is that good? You know, just mix it up. I don't usually go for trying to create things that look like something else (like the faces above) and think that is a mistake most people make. You get too caught up in that and it ends up looking too 'cutesy'. Just go for the sheer abstractness of the design, variation and repetition on shapes and sizes.
Hope this helps and gives you some ideas.