Always in eco theme here you can find some examples of wedding favors for your attendants.
The “Rose of Jericho”
is a name given to two plants:
Anastatica hierochuntica, which grows naturally in northern Africa and southwest Asia
Selaginella lepidophylla, which is native to Southwest United States and Central America
These plants have the remarkable ability to survive in a curled up, dormant, brown, dessicated state for years, and then open up and turn green with a bit of water. After returning to a lovely green, they go dormant again when their water source is removed, and can be revived again after dormancy. This cycle can be repeated for years.
You cand find it here