To be fair, this was originally the point of plastic. The primary point of plastic today is that it is an extremely cheap material that you can mould into pretty much any shape.

Need a bag to carry stuff? Plastic.

Packaging for toothpicks? Plastic.

Spacers inside an electric circuit? Plastic.

Packaging for clothes? Plastic.

Fake plant? Plastic.

Part of the problem is that we're using a wonder-material that lasts forever (plastic) for a bunch of mundane shit where we don't need it, because that wonder-material turns out to be the cheapest material around as well.

Its specifically sensitive to salt, so you can use it for anything with little or no salt without issue. Also it would be perfect for basically all packaging applications that dont involve food but do require an airtight seal. So you could probably replace the majority of all single use plastic packaging/containers with it.

Well let’s stop putting plastic into seawater and we won’t have to worry about it dissolving.

Ah but imagine the eager faces of Logitech's execs when they realize they could make their mice dissolve under your fingers and offer a subscription for replacements.