Guinness

Inside this can is a plastic ball. How do you extract and recycle that?

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Jimmy’s

Most cans with a ring push are annoying because you can’t have a sip and save the rest for later. Jimmy’s bottle is a nice alternative and has a screw top. The lid has a plastic seal, held in place by the unusual holey crimping around the top. Difficult to see how the plastic seal can be removed to prevent contamination during recycling.

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Mega Monster

Another rarity, this comes with a Ball Resealable End so that the can can be closed after opening. I’m not sure if it lives up to its promise of being closable with one hand, but the mashers who drink it have no problem lozzing it out of a moving car window with one hand.

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Plastic cans with aluminium lids

Chaibibi’s luridly coloured drinks, such as the Pink Bubblegum flavour pictured below, might be shown off in a container such as this to good effect. But surely it is a recycling nightmare to try and separate the PET and aluminium parts?

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The Future

Canovation have an interesting all metal design for cans with screw lids. (Not found one yet!) Technology like this could take off with enough interest. The only problem I can see is that the cans might be difficult to open if you can’t get a good grip on the rim of the lid, as often happens with glass jars. Maybe they need some sort of groove into which an opener could be fitted to give better leverage.