If you mean folding the bags to save space:
Lay bag flat, making sure pleats are folded in, then fold bag lengthwise, in half. Continue folding this way, until bag measures about 1-2" wide. Now, fold bag in half or thirds, and lay it flat in the bottom of another bag that can be hung to hold many folded bags.
I hold the bag by the two handles and twist the length down the bag. I twist the bag around and stuff the lose end down the middle of the "knot " formed when twisting. It sounds complicated, but is quick and easy to do. I can put a LOT of bags in one, when twisted into these "ball knots."
Here you go Gra! Happy Holidays to you!
I bought a bag holder at IKEA and put it in the closet. All the plastic bags fit in there to be reused at a later date. They are all in one neat little spot.
Flatten each bag & fold in half lengthways. Lay bag on top of another, overlapping a third to a half length, roll bag up to the half way point of next bag & add another. I store them in an empty Kleenex box. Open the end and tape closed after you put the roll in. Makes a great dispenser.
I do somewhat like Olivia said, but don't fold them. I hold the handles together, run the bag through my fingers to smooth the air out, then wrap the long skinny bag around a couple of fingers and put the bottom end through the hole. She is right, you can fit so many plastic bags into one bag when they are rolled. I have a local grocery store that has a bin for recycling plastic bags. I use it when I fill a bag and just start a new one with the groceries that I purchase on the day that I recycle the full bag. I use them a lot for garbage, that way it gets taken out more frequently.