Keeping mini bonsai containers in a sand tray ensures they stay moist for long time. You can even bury the bottom half of the pot and let the roots escape into sand. Cut them only when you need to exhibit them individually.
Truly elegant small bonsai - pink flowering cherry would be my guess. I am training one of my almond trees into a bonsai and the flowers look pretty close to this but a darker pink. I should think peach trees would also make pretty bonsai as well as being useful to eat.
How to decorate your home with hundreds of awesome trees (and still have space to live) [13 pics]