The solution isn’t so much to replace plastic as it is to eliminate “single use” from our way of life, except as needed for emergencies (eg, situations where the only way to be sanitary is by destroying the object after use).

If you eliminate the majority of non-reusable stuff from your life, the rest becomes much easier. The volumes of plastics would be much lower such that much of it could actually be recycled at least once.

The second bit is to always incorporate end of life into a product’s lifecycle. Shrink what’s allowed to go in landfills. Provide a system to reclaim and often re-use damaged or worn out materials. Design things so they can be easily parted (broken up into parts) so that if a battery dies, you take the old ones in for servicing and either get them replaced or refreshed, instead of tossing the entire device.

Groceries? I no longer use bags; I get the store to give me the flats it gets its stuff in, and I fill those up with my groceries. General shopping? I have a set of cloth bags that stay in my car and another I can shove in my pocket when I’m walking.

I’ve got a metal water bottle I take with me when I go places.

Rejecting single use will get us much further than rejecting plastic.