A small sized pot would be appropriate for a smaller plant. A small plant could also be planted in a large pot, however it would look empty and strange.
Tall
any cage sold at a pet store for small animals would be appropriate
they eat small poppys
the plant would either die or the plant would no be healthier
Small, strong plants such as lichens and mosses can grow there.
This is appropriate for any age. Small children might think of it as a stuffed animal, and it might break if they are rough with it, so they should be watched if that is the kind of thing they would do.
Anythting formal & black is best.
wild rabbits eat grasses and leaves from small bushes
For young children a gift basket with toys or games and candy would be appropriate. Another option to consider giving the child would be some kind of educational DVDs.
A sitar
perennials; such as daylilies.
Yes. If you were to look at pollen you would see that it is unique for each kind of plant.