Capta Tripod Mount
If you're looking for a tripod mount that's rather unique, the $30 Capta tripod mount might be your cup of tea.
It's made out of a solid block of aluminum, but it also doubles as an iPhone stand that you can place on your desk when you're not using it as a tripod mount.
It pretty much just acts as a shelf to set your iPhone on when it's attached to a tripod, so the lack of a secure fit might be a worry here for some users, but if your tripod is just standing still, there's probably no need to be concerned about your iPhone falling off.
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