Has anyone seen a product for sale or come up with a good technique for attaching the sides of two (or more) monitors together in multiple monitor setups? I'd like to be able to attach two adjacent identical monitors in such a way that they stay aligned and that the gap between the monitors is covered up (so light from behind doesn't show through). I'm not talking about a monitor stand (the screens are supported just fine), but locking in the relative placements of the front of the screens and covering the gap between monitors.
I thought about just using black electrical tape, but while that would cover the gap it wouldn't really keep the monitors aligned all that well. It seems to me that there's probably already something out there to do this. Any ideas?