How do you usually re-close a plastic food bag once it's opened?

Rubber band is the most common if not the only method. Clip and zipper bag are a bit overkill, and tape is too hard to reopen. But if I want to use rubber band, I have to make sure I didn’t tear the bag too much. Otherwise I need extra rubber bands or have to leave the bag torn in the fridge.

I use binder clips for chip bags. Twist ties for bread bags. If the bag is resealable (ziploc-type), and if that is easy and positive (not always the case), then I’ll use the reseal feature, otherwise I will often put the hard-to-seal bag inside another plastic bag and seal that with a twist tie. (I reuse plastic bags all the time in this way.)

Sometimes, such as with fresh produce, I’ll simply twist the top and put the bagged produce over the twisted part of the bag, when I don’t need a perfectly air-tight seal.

Depends on the packaging. If it’s sort of crisp/firm, I fold it over several times and stick it inside a plastic bag (most often from the nearby bakery – great durable, food-grade plastic). If it’s soft plastic, I twist the top, tie it off and then stick it in one of those bakery plastic bags. Until this question, I don’t think I’d realized how much I use/re-use those bags.

It depends. If it came in a bag of some sort, and the bag is intact except for being opened at the top, I use a clip. As far as clips go, I have a bunch of black paperclips in the kitchen for this purpose.

For food that comes in bag-like packaging that you can’t re-close easily, I usually use a plastic bag with a twist tie, especially if it is a large amount to be stored. I’m not fond of ziploc. The old fashioned bags with a twist tie are easier and much cheaper. This is what my mom always did, and I do it too.

Sometimes I use plastic wrap. Like with cheese I might just wrap it in plastic wrap. Same with vegetables. If I take a few mushrooms out of a container, I patch the opening with plastic wrap. Half a lemon, plastic wrap.

I also sometimes use glass containers. I try to use glass over plastic (already enough plastic with the bags and wrap) but once in a while I do use plastic containers too.

@ibstubro I use wooden clothespins (with springs) to close all kinds of bags. If it’s in a bag, I pretty much twist the bag put a clothespin on it.

It depends on what kind of plastic it is and what is in the bag. I buy 3 lb bags of walnuts from Costco, and the plastic is thick so for that, I might cut the top of the bag straight across and use packing tape. I put a smaller quantity into a jar so I’m not opening the plastic bag very often.

Bread I will just make a knot in the top of the bag, because it’s a thin, pliable plastic.

Chips and other stiff plastic I will usually look for a clip. In the freezer, plastic bags of vegetables and stuff like that I will use a clip, tie it in a knot, put it into a bigger sandwich bag, no set rule.

Like @JLeslie, I am not a big fan of ziploc bags. Some people use them for everything. Not only are they not cheap, but I look at them as thick plastic with more plastic on the zipper, and just a waste of plastic.

@si3tech: My grandfather was a big fan of wooden clothespins as clips. They are a great and practical thing to have around the house!

I use duct tape.

I grew up using rubber bands, too, like @Mimishu1995. What’s odd, is that I don’t know another person, outside my immediate family, that does that.

Of course I’ll use available methods, like if the bag came with a twist (‘bread’) tie or there’s a usable zipper top.

I hadn’t really thought about folding produce over, but of course I do that, @CWOTUS, or sometimes I tie in a slip knot.

We used to save and reuse all our bread sacks when I was a kid, @BellaB, but I don’t any more. I wonder if the bread residue might introduce bacteria more quickly? But you get points for reuse!

I keep a box of those cheap, gallon sized bags (similar to the free-bees in the produce department) to use as an overwrap for refrigerator things, @JLeslie. I avoid zipper bags, too, if possible because of the waste.
I dislike plastic wrap, but I have a growing collection of re-useable glass food containers and will use plastic if I’m not going to heat.

I remember someone I knew using clothespins at some point in my life, @si3tech. It’s a great practice if it works for you. I think I’d have a hard time keeping track of them in my kitchen.

“Chip clips”? @jca.
I’ve been running into a growing number of people that act like I’m an alien from outer space because I’ve never owned or used plastic clips with a magnet to hang on the fridge.
When did this come about?

I choose to save my “Oklahoma Chrome” for showier projects, @Darth_Algar.

@ibstubro Chip clips have been around for many years. At least 20. I mostly use the paperclips, although I do have one or two chip clips. You usually find chip clips sold at the supermarket.