An answer to your whole post would take several hours. Maybe we can manage 5 mins, each. I'll start with these fragments:
1 A crystal ball is part of the paraphernalia associated with making predictions. If I look into my crystal ball, I see that you're going to meet a tall dark stranger.1) "Crystal Ball"
besides the meaning of a ball made of crystal, is there another implication / meaning? eg .....Most people are limited in their options. However, she has her own crystal ball, which was......
2) "I need to find a formal dress that is beyond the ubiquitous black dress but doesn't cost a fortune."
* Any problem in the above sentence?
* Are there other common words to replace "ubiquitous"
3) "There are plenty of helping hands for the inexperienced."
* Any problem in the above sentence? I thought "inexperienced" is an adjective.
2 Here the word ubiquitous is used just to mean common; it really means 'having the characteristic of being everywhere'. The sentence seems generally OK, though I have my doubts about the suitability of the word beyond.
3 inexperienced is an adjective, but 'the inexperienced' is a Noun Phrase - as in comfort the lonely, feed the hungry, shelter the homeless