It is my belief that we could easily have a law which required that companies had to use recycled or re-usable packaging or biodegradable packaging wherever that is possible as an alternative to using plastic which comes from a finite resource on our planet of oil.
Currently I have collected 8 Persil tubs (photo to follow !!) and am about to send them back to Unilever via their FREEPOST address with the suggestion that they could require us to re-fill our (very substantial well made) plastic tubs at the supermarket. There could easily be a large skip at the supermarket with the liquitabs in it and a dispensing drawer at the bottom which allowed 20 capsules out at a time. This type of machine is available at driving ranges to dispense golf balls, and I am pretty sure it could be designed fairly quickly. If they want to contact me, even as a non engineer, I am pretty sure I could design it in a day. It would need to be only for adults to use though as these liquitabs have been mistaken by children for sweets on occasion.
Another area which I allude to in another post, is the current use of plastic packaging for feminine hygiene products, where there is a perfectly good cardboard alternative which will biodegrade and not end up washing up on the beaches half way across the planet. This is Proctor & Gamble who are currently guilty of promoting this.