I've owned the Bracketron PHV-202-BL, vent-mounted smartphone holder for a couple years now. Cheap AND practical. It's worked like a charm all this time, but today one of the two spring clips that attaches to the vent louver broke. Dang.
I was about to buy a whole new unit... but the bracketron website gives out FREE REPLACEMENTS!! Seriously, is that COOL or what???
Here's the link for the replacement springs:
If you'd like to order one of these puppies, here's the amazon link:
(The PHV-200-BL is identical except for packaging... they share the same replacement springs)