Why not? Sure it would take some time to get it perfect, and getting it to be DMX operated wouldn't exactly be easy. But it would beat paying hundreds of dollars per unit. So why not do it? I'm just brainstorming here, and the CD Drive Projector Dowser got me thinking, why not? The hardest part would really be getting it to be DMX controlled. Gobo Rotater: Take a gobo put a heat resistant rubber gasket(not sure if that's the right word, but more or less something to shrinkwrap around the gobo to give it friction). The bottom frame would have to bearings to support the gobo, the top could use two motors from a CD Drive, nothing fancy, with the right amount of pressure you could easily make the gobo rotate. Color Scroller: Tape your selection of gels together, here's where it gets cool, we steal a concept from tanks, you affix a tread system to the outer edges of the "gel string" in parallel and you have two motorized rods one at top and bottom and you would use it like a scroll, and again, a small cheap motor would be more then powerful enough to get you from end to end and anywhere in-between. I think I might draw something up to better illustrate what I mean in parts, since I'm not an engineer I don't know all the proper terms, but I can draw what I'm talking about. Either way why not once you get one done the process would be cake, and you only need to do the programming once, the part totals would cost a fraction of the price, and if you had the programming done already you could make 20 in a weekend with a few friends and the promise of a case of beer at the ed of the night. Or you could outfit a venue in a few weeks during season downtime. Has anyone done something along these lines? I know I'm saying it would be cheaper materials, but the end product wouldn't be cheap, it would be easily reparable, drop one, fix it the next day, just swap out the motor/string/bearing/plates. Why not? Any ideas, or have I just been drinking too much caffine? Disclaimer: I am only brainstorming and asking if people have tried something like it, not recommending that you go out and do it without the supervision of someone who knows what they are doing.