What I didn't want to give is the impression that these structures are not common - in fact it was because they are so common that I decided to write about them in the first place.
So, to make my point (and to make it in a fun way) I paged through a Chinese version of the Peanuts cartoon strip, starring our little hero Charlie Brown. Here are some frames which give more examples of "(require brackets)'d sentences" :-)
By the way, if you're not at the level of reading as many Chinese characters as this, don't worry about it. Focus on the English versions of the sentences, to start to get a feel for how they are constructed in Chinese.
(click on the images for clearer shots)
This first frame is a great example of just how long the 'middle' phrases can be, and if you don't spot the opportunity to put in some brackets, then the sentence is going to seem like garbage (like it did with me, when I first saw this frame):
I want to tell you some (...) things
I want to tell you some (I have never told anyone before) things
I guess the clue is that after the words 一些 ('some') it seems to immediately begin a new sentence (我以前 ...) without any preposition or conjunction. That should get you thinking about brackets!
Can you put them in a (...) place?
Can you put them in a (I am able to remember) place?
I can see a (...) dumb child
I can see a (sitting inside a pumpkin patch) dumb child
I used a double-brackets in the Chinese sentence to emphasise how prepositions (like 里=inside) are applied in Chinese, if that's not quite obvious to you yet.
Happy reading (subjects that you find interesting)'d texts.