I love going to the US for all of the free carrier bags I get. Keeps me going over here so I don't need to buy any.
I have a reusable cup at work, and one at home too. Sometimes I get the China tea set out if I'm feeling decadent. And that is just at work
I cannot conceive how someone will carry all those reusable tubs on a bus journey home from the shops - or put them in a pram, or take them to work to do the shop on the way back. Or how home delivery services will work well with it. Or how it will work with all the "milks" we have nowadays.
The idea is nice, but like other things, it feels a little half baked and not real world ready yet. We need to think big, but be practical and scaleable so that everyone can do it from a 10 year old kid to a 90 year old man.