First of all its called a story book planet, not a wonder book planet. Second You can only find these planets randomly, they are scatered across the universe, I've been playing spore for a long time and I've found a few but as far as i can see, you can only find them by flying from planet to planet.
You can't find a charmander in Spore, but you can try to make one!
Hearing aids
I couldn't find information about such a planet. If it appears in some television story, or book, it may be a fictional planet.
There is one arena on each planet if you are having trouble finding them search for blue icons on the visual screen of your ds or dsi
Yes spore mods do work. You can find the largest list of spore mods here: http://sporedum.net/spore-modding/spore-mod-index/
for the planet buster tool you need to unlock badges in space stage it is one of the later ones, you also need to find a planet that will sell it too you, it costs between 2.5 and 5 million spore bucks. oh and using it will break galactic conventions and will result in many species declaring war on you. The way that you get it is to conquer 50 or more planets and then you will get a badge that allows you to get the Planet Buster.
You look for it in your programs and find the application SPORE. It will come up.
Buy it and find out.
in the EA store
at spore.com
in u mum
Look for it on the back of your SPORE instructions manual, it's usually near the top.