Any hole could be used to tie it to anything.
Headphones usually don't need to be wrapped, and if they do you can wrap them around anything, including themselves.
Letter opener = finger
string cutter = pocket knife, which if you don't carry you kys
Hex keys only work if they are out in the open, witch they usually are not.
Door latch opener? seriously? Get a proper set of picks.
Ruler. Ooooh, you can measure anything up to 2 in!
Phone stand = paper clip, or, the actual stand that comes with the phone case.
Screw driver tips are done better with an eye glass repair kit.
Bottle opener. If you need one that often, you are already carrying one.
This is mall ninja shit tier.