I was digging in a box of junk the other day and found my old Soligor 400mm lens with OM mount. The aperture ring has lost it's click, and the blades sometimes move and sometimes don't. There is oil on the blades and the spring just isn't strong enough to close them when the button/lever is pushed. I paid $75 for it back in 1985 on clearance, and it never was really very sharp. It's not really worth fixing. So the question is what do I do with it? It's a gigantic heavy lens and looks funny mounted on my E-P1. Any ideas what I could make from the barrel/hood parts? I thought about using the front element for a magnifying glass, but don't know what to do with the rest of it.