Question

1. Where is there a candy striper?
2. Where can we see a candy striper?
3. Where is a candy striper from?
4. Where does a candy striper live?
5. What does a candy striper wear?
6. What clothes does a candy striper wear?
7. What kind of clothing does a candy striper wear?
8. What kinds of clothes does a candy striper wear?

(Are the questions all grammatical and is used commonly?)

Answer 1

#1 would be better this way: Where is a candy striper?

#2 is fine.

#3 would be better this way: Where is the candy striper from? (The word "a" means any candy striper; the word "the" means a particular candy striper.)

#4 - see #3.

The rest are fine.