I mean they are the ones who can actually make a difference; someone needs to do some clever thinking
Milk bottles would be an easy swop......and maybe glass for juices as well
Meat seems hard to repackage without plastic - but fruit and veg is a no-brainer with punnets made out of that eggbox stuff (mind you I haven't seen a plastic egg box for ages thankfully)
I know it's a big change, but they really need to get on board with it - Tesco can't even manage plastic free teabags!