Fairy Garden Link
Whilst searching around today for potting shed ideas i found this great little fairy garden Kit. Here's the link: Fairy Garden
The kit contains real soil, planting box, wooden base, flagstone, arbor, bench, birdhouse and fairy dust. Its selling for $62.
I think it would make a great present for any child (adult to) interested in miniatures. Plus they will be learning about plants as they do so.
When i was a beaver scout leader i spent weeks collecting lots of different materials, and even longer potting together 28 kits.
We grew the gardens in wooden bases similar to this and the children thoroughly loved doing so. No two were the same and they each chose their own theme. The boys tended to go for typical boy themes like a football based garden or a pirates den etc, while most of the girls went for fairy gardens.
What was fun about the gardens was when they each child brought them back to show how they had grown and what they had done as little extras at home.
Most of the girls were covered in glitter with neatly cut lawns, while the boys had all let theres grow wild. They really enjoyed making these, watching them grow and tending them as they did so.
I suppose you could pinch this idea and put together your own themed box.
Here's a link to some great 1:12 garden miniatures alongside nice paving and brick surfaces. Garden Center