Money

Money might be one of the hardest things to share (maybe after your toothbrush), because it is a medium of exchange and the concept of the exchange is to ask for what you get in return before you give something - quid pro quo. - But there are very simple schemes you can make to voluntarily share money-resources.

Sharing money could be done through different ways.

A good way to share money is to not directly share money in the first place but to share expenses. This can happen on donation basis - as for example with the concept of the magic hat of the rainbow people.