About three years ago in Thailand, I was talking to Professor Apichai about community currencies, especially the village coupon currencies (which are low-tech, no computers there). He explained to me that some of the national currency  that entered the system to back the currency was generated by the sale of manure. So I've been thinking of adapting this idea to the western city.

Simply put, we make a deal with the council to be credited for the kitchen and green waste that is mass-composted. Them we use the credits and compost for further projects, starting a small but very virtuous circle.

This is unlike Recyclebank because it is large scale and the credits are not used for consumer 'rewards' (which creat other negative externalities) they are used for green projects and, in general, for collective benefit.

I'll post the complete paper, when I've finished it!