Just thinking about them just now
I decorate my christmas tree with oragami each year and I love the nature of it.
The design I have used is quite sturdy... and should last a good few years if treated right. They are made from paper wth a cotton thread to hang from, so at the end of their life cycle they can be composted.
These ones are particularly small and cute (because I was running out of this pattern paper)
Soon to be for sale in Snowdrops and Daisies outlet near you? :)