We personally have tried reducing our plastic usage, switching to reusables where possible and in our style of shopping and at home with what we have and what we use. However there are some things we just can't get around. Availability being one and the simple truth of cost being another.
For example - we buy cereal.
Usually oats and muesli type for ourselves, except when the boys and their lovely girls come home, then we keep their favourites on the shelf too. Where possible, we purchase a paper bagged variety from our usual supermarket or from our own lovely village shop with a refill station - it is small (and perfectly formed!) so does not have the capacity to keep a big selection of cereals apart from oats.
Commercial cereal cardboard boxes are recyclable but the plastic food grade bag inside is not. So once we have finished the contents, the box goes into the paper skip and the bag is pulled fully open, cleaned and then stored to be used as a sandwich or cheese wrap. I make sure that this 'wrap' is then used many times before it then is disposed of - removing some of its 'single use plastic' moniker but it still is not biodegradable.
We used to purchase a rather delicious bloomer style loaf when the boys were still home as each slice was thick and chunky and filled hollow teenager legs. These loaves came in paper bags which were not 'lined' on the inside by a thin layer of plastic so once eaten, the loaf bags went happily into the paper skip. Now it is just Himself and I, we have 'downgraded' to a simpler thinner sliced bread with 'bits' in it - partly due to cost again and partly as we found the previous doorstop type sandwiches were actually quite a 'chore' to munch through in a short lunch break slot. These loaves are sold in plastic bags..... so they are kept and used to store foodstuffs in the freezer, reducing their single use status again, but still needing to ultimately be disposed of.
These are all kept, used either in the greenhouse, as food holders in the fridge, seed packet storage, thread/yarn bits/fabric trimming holders or crumb 'catchers' when we wipe down surfaces then given to the birds or the chickens.
However, ultimately - they are all eventually thrown away (the punnets are either the 'wrong' plastic to recycle or the type that are non-recyclable) but only after they have had to work for that 'privilege' .
Eldest's girlfriend has been working on a 'single use sculpture' with her geography pupils and we were saving plastic lids as part of it....... There was that oxymoron moment when I was pleased to be able to hand over a 'goodly' selection of lids to her yet it brought home how many our 'simple' life style produced.... things have got to change.
Not just us, but everyone including the producers. Either plastic has to be 100% recyclable or replaced with something that is.
Food for thought (sic).
If you are interested (and you should be)