I try to buy my veg from the loose rather than prepackaged area and I don't bag any larger items. If I take a bag it will be used later often I will have a few in one of my shopping bags so I don't need fresh ones. Plastic punnets are used for seed trays before going into recycling but black plastic is so hard to recycle. I try to avoid all but the loaf pan shaped ones which are brilliant for growing veg shoots. After they have been re-used for batch cooked meals a few times.