I love David Rubridge's designs, so found this idea on his website particularly inspiring.
Why fill a truck with one tree,
when the cost to the Earth is reduced
by packing in boxes of seed?
You receive the seed of a lightshade,
and have fun and satisfaction
making it grow yourself.
Your tree fills into the space;
the patterns of its leaves
calm with their shade.
It nourishes with its fruit,
and keeps the balance of life.
The idea ripples out
and spreads to the world,
which becomes a brighter place.