A dangling participle is a wallet chain, cell phone headset cord, beeper leash, purse strap or other long slender device used to secure an object to a person.
A dangling participle is the "straps" that have the tendency to always get caught on another object when you least expect it to, often resulting in a humurous but humiliating yank in the opposite direction of travel (i.e.: getting out of a car, getting up from a desk, etc.).
The ability girls and women have developed to hold several items at once in one hand. The skill has been developed due to the lack of pockets in women's clothing.
I thought she'd need multiple trips to carry her phone, keys, wallet, and Starbucks to her car since she needed the other hand to open the door, but she used her impressive girl grip to carry everything in one hand.