I think most of us, at one time or another have had an issue with pants being just a smidge (or a lot) too long and do not have the time or immediate resources to get them hemmed. Here are some of the things I’ve used for a quick hem:
In a pinch pants hem
Staples. Use only as few as you can get away with. And be sure to staple your hem so that the back side of the staple is what appears on the front side of your pants. If the silver staples stick out like a sore thumb, you could take it one step further and very carefully color it with a Sharpie.
Bobby pins. About 4 per pant leg should do the trick.
Snap barrettes. You know, the metal kind that pop open and close? Even better if they’re in a neutral color like black, bronze or brown. Of course, you could make a fashion statement with your daughter’s sparkly purple and pink ones.
repurposeful 
Duck tape works wonders. Just cut four small pieces and tape inside the pants and you are good to go.
I’ve done hot glue and masking tape.
Double sided tape is great.
i’m using safety pins atm……….
Duct tape. I’ve used it to repair torn jeans, ripped shoes, and even heavy stage curtains.
Duct tape! I’ve even used it to help keep the neckline of a dress from drooping too low… 😉
As a 5’10” woman living in the Midwest, I’ve never had this problem! If I found a pair of pants that were “too long”, I’d simply rejoice at finding a pair that were actually long enough! My mom is 6-feet tall and she agrees. LOL